In this articles we shall study about different kinds of medical specialists. Medical specialists are experts in certain fields of medicine. They either treat specific parts of the body, such as the back or the brain, or they specialize in certain diseases, such as cancer. Family doctors keep a list of local specialists and can help patients choose the right specialist for each medical issue.

General Practitioners and Physicians:

General Physician or Family Practitioner:

General Physicians are highly trained specialists who provide a range of non-surgical health care to adult patients. He/she treats many different medical conditions and ailments on an outpatient basis.

They care for difficult, serious or unusual medical problems and continue to see the patient until these problems have resolved or stabilized. They are popularly known as a ‘general practitioner’ or a ‘family physician’ in many countries.

Anesthesiologist:

An anesthesiologist is a doctor who practices anesthesia. Anesthesiologists are physicians specializing in perioperative care, developing anesthetic plans, and the administration of anesthetics. Anesthesiologists help ensure the safety of patients undergoing surgery.

The anesthesiologist provides care for the patient to prevent the pain and distress they would otherwise experience. He/she is responsible for keeping the patient anesthetized (sedated) and for monitoring the vital signs like airway, breathing and circulation during surgery. They monitor input and output during the surgery like delivery of intravenous fluids, blood and other drugs.

Surgeons:

A surgeon is a doctor who specializes in evaluating and treating conditions that may require surgery, or physically changing the human body. Surgeries can be done to diagnose or treat disease or injury.

• : General surgeons are doctors who specialize in surgical procedures. Surgery is any procedure that alters body tissues to diagnose or treat a medical condition. 
• Cardiothoracic Surgeon: A cardiothoracic surgeon is a medical doctor who specializes in surgical procedures of the heart, lungs, esophagus, and other organs in the chest. This includes surgeons who can be called cardiac surgeons, cardiovascular surgeons, general thoracic surgeons, and congenital heart surgeons.
• Neuro-Surgeon: Neurosurgeons are medical doctors that diagnose and treat conditions related to  the brain, spine, and other parts of your nervous system. 
• Oral or Maxillofacial Surgeon: Maxillofacial surgeons, sometimes called oral and maxillofacial surgeons, are trained to handle a wide variety of conditions and injuries that affect the head, neck, mouth, jaw, and face.
• Otolaryngologist Surgeon: Otolaryngologist Surgeon treats issues in ears, nose, or throat as well as related areas in the head and neck. They can do surgeries in these areas.
• Surgical Oncologist: They are surgical counterparts of medical oncologist. They are general surgeons with specialty training in procedures for diagnosing, staging (determining the stage of cancer), or removing cancerous growths.
• Pediatric Surgeon: Pediatric surgeons are doctors who specialize in treating children. They’re trained to do operations on infants, children, and young adults. 
• Plastic Surgeon: Plastic surgeons are focused on reconstructive procedures. They can treat patients who have conditions like birth disorders, injuries, illnesses, or burns. Many plastic surgeons choose to become cosmetic surgeons and do procedures to change a patient’s appearance or aesthetic.
• Orthopedic Surgeon: An orthopedic surgeon is qualified to diagnose orthopedic problems, perform or prescribe treatments, and assist with rehabilitation. 
• Vascular Surgeon: Vascular surgeons are doctors who treat diseases and problems within the vascular system, the network of arteries and veins that carry blood throughout the body. 

Internal Medicine Practitioner/ Internist:

Internal medicine physicians, or internists, are specialists who apply scientific knowledge and clinical expertise to the diagnosis, treatment, and compassionate care of adults across the spectrum from health to complex illness.

They are especially well trained in the diagnosis of puzzling medical problems, in the ongoing care of chronic illnesses, and in caring for patients with more than one disease. Internists also specialize in health promotion and disease prevention. He/she deals with the diagnosis, management and non-surgical treatment of unusual and serious diseases.

Doctors Treating Children:

Pediatrician:

A pediatrician is a medical doctor who manages the physical, behavioral, and mental care for children from birth until age 18. A pediatrician is trained to diagnose and treat a broad range of childhood illnesses, from minor health problems to serious diseases.

They focus on the prevention, detection and management of physical, behavioral, developmental and social problems that affect children. They work to diagnose and treat infections, injuries, and many types of organic disease and dysfunction and bring about improvement in the life of children with chronic problems.

Neonatologist:

A neonatologist is a specialist in caring for premature and ill newborns and generally works in hospital’s neo-natal care or baby special care units. Newborns can present a unique set of health challenges that require a high level of skill and medical expertise to treat.

This specialist does tests to make sure that newborn babies are well- developed and free from infections and organ deformities.

Pediatric Cardiologist:

Pediatric cardiologists specialize in diagnosing and treating heart problems in children. In those children who might need heart surgery, pediatric cardiologists work closely with pediatric heart surgeons to determine the best treatments and interventions.

Pediatric Endocrinologist:

Pediatric endocrinologist specialize in diagnosing and treating hormone or gland problems in children.

Pediatric Oncologist:

Pediatric oncologists are doctors who diagnose and treat cancer in children and teens.

Doctors Treating Old People:

Geriatrician:

Geriatricians are primary care doctors who have additional training in treating older adults, especially those 65 and up. People in that age range often have multiple or complex health matters and need specialized care.

Geriatrician at times requires to take an interdisciplinary approach to a problem as many patients suffer from not only medical but have social problems too. A Geriatrician may work with other physicians, nurses, social workers, occupational therapists and family members to take care of the needs of his patient.

Gerontologist:

A gerontologist is a doctor studying and treating conditions arising in the aging process. He mostly works with senior citizens, studying their biological, medical and social issues at that age. These specialists work in hospitals, nursing homes and laboratories and may form a part of government health policies for the old. A gerontologist is a licensed physician and diagnoses and treats old age diseases like Alzheimer’s disease, Parkinson disease and osteoporosis.

Doctors Treating Heart and Vascular Problems:

Cardiologist:

Cardiologists are qualified to treat heart attacks, heart failure, heart valve disease, arrhythmia, and high blood pressure. He may collaborate with cardiac surgeons to decide the course of treatment for his patients.

Cardiology is a specialty, which has many subspecialties like interventional cardiology, nuclear cardiology, electro physiology, or echocardiography, which help in making diagnostic studies.

Vascular Medical Specialist:

Vascular surgeons are doctors who treat diseases and problems within the vascular system, the network of arteries and veins that carry blood throughout the body. 

Doctors Treating Hormone/Gland Problems:

Endocrinologist:

Endocrinologists are doctors who specialize in glands and the hormones they make. They deal with metabolism, or all the biochemical processes that make the body work, including how the body changes food into energy and how it grows.

He/she diagnoses and treat diseases like diabetes, thyroid diseases, metabolic disorders, over or under production of hormones, menopause, osteoporosis, hypertension, cholesterol disorders, infertility, lack of growth and endocrine glands cancer..

Doctors Treating Stomach/ Liver/Bowel, Colon Related Problems:

Gastroenterologist:

A Gastroenterologist is a physician with dedicated training management of diseases of the gastrointestinal tract and liver. They are specialist in digestive diseases.

He/she is mainly concerned about the prevention, diagnosis, and treatment of conditions and disorders in the gastrointestinal tract involving the esophagus, stomach, small and large intestine, rectum, liver and pancreas of adults.

Hepatologist:

Hepatologists are medical doctors who diagnose, treat, and manage problems associated with liver, gallbladder, bile ducts, and pancreas. He deals in disorders like serious and chronic hepatitis, chronic alcoholism, and liver disorders due to certain medications.

Colorectal Surgeon:

Colorectal surgeon is a doctor, who treats disorders of the rectum, anus, and colon.

Doctors Treating Kidney and Urinary System:

Urologist:

A Urologist specializes and treats the urinary tract problems of both men and women and on the reproductive organs of men.

He/she treats problems in the urinary system, which includes kidneys, bladder, ureters, and urethra. He also treats a man’s reproductive system, which includes the penis, testes, scrotum, and prostate.

Nephrologist:

Nephrologists are doctors who specialize in conditions that affect the kidney. They diagnose, treat, and manage acute and chronic kidney problems and diseases. They also treat associated issues like high blood pressure, fluid retention, and electrolyte and mineral imbalances. In addition, these specialists are in charge of kidney dialysis treatment.

Doctors Treating Reproduction / Sex Problems:

Andrologist:

Andrologists are urologists who focus entirely on the treatment of conditions affecting male fertility and sexuality, rather than practicing a broader form of urology.

This specialty includes the treatment of physical conditions affecting the genitalia, such as undescended testes, as well as injuries and diseases that can affect fertility or sexual function.

Gynecologist:

A gynecologist is a doctor who specializes in female reproductive health. They diagnose and treat issues related to the female reproductive tract. This includes the uterus, fallopian tubes, and ovaries and breasts. They diagnose and treat reproductive system disorders such as endometriosis, infertility, ovarian cysts, and pelvic pain.

They may also care for people with ovarian, cervical, and other reproductive cancers.

Obstetrician:

An obstetrician is a specialist who has specialized in the management of pregnancy, labor, childbirth, and a woman’s reproductive system. They also called an OB/GYN.

They take care throughout pregnancy, and give follow-up care.

Sexologist:

A sexologist is a person who has studied human sexuality. Sexologists have studied the science of sex, which means they have studied human anatomy and physiology (how the body works and why) and psychology (how our minds work) regarding sexuality. Sexologists help people with all things to do with sexuality.

Fertility Specialist:

Fertility specialists are obstetrician or gynecologists who have undergone specialized training for reproductive endocrinology. 

Venereologist:

Venereologists deal with the study and treatment of sexually transmitted diseases caused by sexual contact. A person may just be a carrier without realizing it or may actively suffer the symptoms. They may be engaged in research working out methods of prevention, and innovations in treatment. These specialists may have to deal with social issues and moral norms at times in certain societies, however they do play an important role in educating the patients, their family and general public about sexual infections and diseases and about their preventive measures.

Doctors Treating Immunology/ Allergy Problems:

Allergist:

Allergists are doctors who specialize in treating allergies and other immune problems. As allergies are an overreaction of the immune system, allergists must have a thorough understanding of how your body fights infection to treat the hypersensitivity that leads to allergies.

Immunologist:

Immunologists are doctors who diagnose, treat, and work to prevent immune system disorders. They study the complex immune system consisting of cells and molecules that help fight infection. These specialists treat people born with a defective immune system or those that acquire a defective immune system when they are affected by virus, bacteria and fungi that do not affect healthy persons.

Doctors Treating Cancer:

Medical Oncologist:

Medical oncologist deals with the diagnosis, treatment, and prevention of cancer. He/she takes care of cancer patients by using things like chemotherapy, hormone therapy, targeted therapy, or immunotherapy.

Radiation Oncologist:

Radiation oncologists work closely with medical oncologists, surgeons, and other doctors to determine the most appropriate course of treatment for people diagnosed with cancer. Before performing radiation procedures, radiation oncologists use software to carefully map out where they will deliver radiation to their patients. They also decide which type of radiation therapy to use.

Surgical Oncologist:

They are surgical counterparts of medical oncologist. They are general surgeons with specialty training in procedures for diagnosing, staging (determining the stage of cancer), or removing cancerous growths.

Doctors Treating Lungs and Blood Problems:

Pulmonologist:

A pulmonologist is a doctor who diagnoses and treats diseases of the respiratory system viz: the lungs and other organs that help to breathe. They are concerned with diseases of the respiratory tract, bronchial tubes and lungs as well as the heart. These specialists have extensive training in chest diseases and conditions such as pneumonia, asthma, tuberculosis, emphysema, or complicated chest infections.

Hematologist:

Hematologists are internal medicine doctors or pediatricians who have extra training in disorders related to your blood, bone marrow, and lymphatic system. They may work in specialized areas that aid in diagnosis like electrophoresis, flow cytometry, or coagulation.

Doctors Treating Brain/Nervous System Problems:

Neurologist:

Neurologists are doctors who diagnose and treat problems with the brain and nervous system. neurologists focus on non-surgical treatment.  Neurologists may also specialize in dealing with dementia, epilepsy, headache medicine, Parkinson and Movement Disorders, or Sleep Disorders.

Neuro Surgeon:

Neurosurgeons are medical doctors that diagnose and treat conditions related to the brain, spine, and other parts of your nervous system. They are specifically trained and certified in the use of surgical treatments.

Doctors Treating Joints / Bones/ Muscle Problems:

Orthopedist:

Orthopedist is a doctor who specializes in the branch of medicine concerned with the correction or prevention of deformities, disorders, or injuries of the skeleton and associated structures

Orthopedic Surgeon:

An orthopedic surgeon is qualified to diagnose orthopedic problems, perform or prescribe treatments, and assist with rehabilitation. They also help to develop long-term strategies to treat illnesses, disorders, and issues relating to bones, joints, ligaments, tendons, and muscles. These specialists help treat broken bones, joint problems, like arthritis, and degenerative conditions, like osteoporosis. In addition orthopedic doctors treat sports injuries, infections or congenital conditions related to, and tumors in the bones.

Rheumatologist:

A rheumatologist is a medical practitioner who specializes in treating arthritis, rheumatic diseases, systemic autoimmune diseases and conditions involving the bone, joints and muscles. Since many of these diseases involve the immune system, rheumatologist have an in-depth knowledge of the immune system. Rheumatologists work closely with their patients and orthopedic surgeons, neuro-surgeons, and radiologists who perform joint replacements, soft tissue reconstruction and repair and nerve decompression, and report on X-rays, CT, MRI and ultrasound scans.

Podiatrist:

Podiatrists are medical specialists who help with problems that affect feet or lower legs. They can treat injuries as well as complications from ongoing health issues like diabetes. Podiatrists deal in painful feet irritations like corns, bunions, plantar warts, plantar fasciitis, hammertoes, arch problems and circulatory problems in diabetics.

Osteopath:

Osteopathic medicine is a special science devoted to treating and healing the patient as a whole by using methods called osteopathic manipulative treatment to make sure the body moves freely ensuring that all the body’s healing systems are working efficiently.  Osteopath, is a doctor of osteopathic medicine (DO) who aims to improve people’s overall health and wellness by treating the whole person, not just a condition or disease they may have. This includes osteopathic manipulative medicine, which involves stretching, massaging, and moving the musculoskeletal system.

Doctors Treating Problems of Specific Part of Body:

Otolaryngologist ENT Surgeon:

Otolaryngologist is a doctor who treats issues related to ears, nose, or throat as well as related areas in head and neck. They’re called ENT Specialist for short.

Audiologist:

Audiologists are healthcare professionals who specialize in hearing and balance disorders.

Dentist:

A dentist, also known as a dental surgeon, is a health care professional who specializes in dentistry (the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity).

Periodontist:

A periodontist is a dentist who specializes in the prevention, diagnosis, and treatment of periodontal disease (a chronic inflammatory disease that affects the gums and bone supporting the teeth also known as gum disease), and in the placement of dental implants.

Dermatologist:

A dermatologist is a doctor who specializes in conditions involving the skin, hair, and nails. He/she deals with not only study, research and diagnosis of normal disorders, diseases, cancers, cosmetic and ageing condition of the skin, hair and nails but also includes specializations like dermato-histopathology and topical and systemic medications. It also includes dermatological cosmetic surgery, immunotherapy, laser therapy, radiotherapy and photodynamic therapy. Common skin diseases treated by dermatologists include skin cancer, warts, fungal infections, dermatitis, psoriasis, acne, atomic eczema and herpes simplex.

Ophthalmologist:

Ophthalmologists are medical doctors who specialize in the diagnosis and treatment of eye and vision problems. He/she is a specialist trained in the medical and surgical preventive care of the eyes. He is well trained in giving comprehensive care by carrying out visual examinations, prescribing glasses and contact lens and treating eye ailments and diseases such as glaucoma, cataracts, eye injuries, cornea disorders and also eyelid problems.

Doctors Treating Problems with Blood / Due to Parasites:

Parasitologist:

Parasitologists study the life cycle of parasites, the parasite-host relationship, and how parasites adapt to different environments. They may investigate the outbreak and control of parasitic diseases. They study protozoan and metazoan parasites and try to find ways to spread disease. They work in a close relationship with other sciences such as immunology, cell biology, microbiology, and molecular biology

Microbiologists

A microbiologist works is a lab personnel engaged in the study and analysis of the structure and processes of microorganisms. They may also be engaged in collecting and analyzing cultures and air, water and soil samples to learn about the microorganisms present in them. They work to develop vaccines, biological medicines and biofuels.

Epidemiologist:

Epidemiologists study outbreaks of diseases, the causes, locations, and how various communities are affected, utilizing relative information to aid in the prevention of future outbreaks. Epidemiologists help to keep the public informed of methods to maintain and improve public health. 

Serologist:

A serologist is a medical scientist who specializes in blood serum analysis. He is often associated with forensic investigations related to criminal inquiries, but may also be instrumental in medical diagnostic procedures. A serologist may also examine and analyze blood found in the place of a crime also. A serologist carries on a wide range of laboratory tests by carrying on specific antigen and antibody reactions.

Doctors Treating Psychological Problems:

Psychiatrist:

A psychiatrist is a medical doctor who specializes in the mental health field. He/she deals with rge prevention, diagnosis, and treatment of mental, behavioral, and emotional disorders. He helps to enhance the quality of a person’s life by making assessments of the mind and emotions, providing treatment and rehabilitation care to mentally disturbed patients. They may also deal with phobias of all types. They may offer a mix of treatment in some cases, which includes medication, psychotherapy, and counseling.

• General Psychiatrist: General Psychiatrist is a medical professional who specializes in the study, treatment and diagnosis of mental disorder and behavioural problems.
• Neuropsychiatrists: Neuropsychiatrists is a medical professional who specializes in mental and brain health.
• Geriatric Psychiatrist: Geriatric Psychiatrist is a medical professional who specializes in mental complications in elderly individuals.
• Forensic Psychiatrists: Forensic Psychiatrists  is a medical professional who specializes in the study of correlation between psychology and crime.

Supporting Specialists:

Diagnostician:

A Diagnostician is a doctor who diagnoses and treats medical conditions and solves complex medical mysteries. All Doctors are technically Diagnosticians because they diagnose ailments.

Pathologist:

A pathologist is a specialist who examines body tissues and fluids to analyze the origin of a disease. A pathologist generally works in laboratories on samples collected for investigation and helps physicians and surgeons to diagnose diseases. Such pathologists are called clinical pathologists. Other works of area are anatomical pathology, molecular pathology, surgical pathology, forensic pathology and speech pathology.

Paleopathologist:

Paleopathologists studies evidence of trauma, disease and congenital defects in human remains. This group of specialists may be drawn from archaeologists, geneticists, and physical anthropologists. These specialists research the prehistoric or ancient populations, but also study epidemics in prehistoric times.

Radiologist:

Radiologists are medical doctors that specialize in diagnosing and treating injuries and diseases using medical imaging (radiology) procedures (exams/tests) such as X-rays, computed tomography (CT), magnetic resonance imaging (MRI), nuclear medicine, positron emission tomography (PET) and ultrasound.

Nuclear Medicine Practitioner:

Nuclear medicine physicians, also called nuclear radiologists, are medical specialists that use tracers, usually radiopharmaceuticals administered by injection, swallowing, or inhalation for diagnosis and therapy. These RA tracers are attracted to specific parts of the body and show up as gamma rays detected externally by cameras. Nuclear medicine imaging procedures have been successful in identifying abnormalities much earlier than radiological procedures. Nuclear medicine practitioners carry on bone scans to examine orthopedic injuries, fractures, tumors, or unexplained bone pain and heart scans to identify normal or abnormal blood flow to the heart muscle, measure heart function or determine the existence or extent of damage to the heart muscle after a heart attack. Besides they conduct breast scans to locate cancerous tissues in the breast, and liver, gall bladder and kidney scans to judge the functioning of liver, gallbladder and kidney. Besides they also carry on thyroid and lung scans and also scans to detect the causes of gastrointestinal bleeding.

Diabetologist:

A Diabetologist is a doctor who specializes in the treatment of Diabetes, which is a metabolic disorder and, therefore, forms a part of endocrinology. He deals and specializes in diseases and conditions like diabetes mellitus type 1, diabetes mellitus type 2, non-insulin dependent diabetes, hyperglycemia, hypoglycemia, diabetic ketoacidosis, arteriosclerosis, peripheral neuropathy, foot ulcer and diabetic retinopathy. He may also deal in gestational diabetes.

Dietician:

A dietitian, is an expert in identifying and treating disease-related malnutrition and in conducting medical nutrition therapy. He/she is an expert in the field of food and nutrition. Many individuals, companies, families, schools, hospitals and other institutions seek their help to make meal plans that could be healthy, cost-effective and beneficial to them. They can also help one to plan their diet to lose weight.

Physiotherapist:

A physiotherapist, or physical therapist, works with patients to help them manage pain, balance, mobility, and motor function. He/she helps patients who have been disabled by injury, illness and age to gain their normal range of movements, prevent further damage and increase their functionality. A physiotherapist diagnoses the patient’s problem and helps the patient to do physical exercises that would tone his muscles and strengthen them. They may also do massages and stretch the patient’s muscles and offer advice regarding nutrition, body conditioning and prophylactic care.

Forensic Medicine Expert or Coroner:

A Forensic Medicine Expert or Coroner is a medical professional who works in coordination with others like a coronary investigator to determine the cause of death of a person who may have died in mysterious circumstances. This medical examiner is responsible for performing actual autopsy on the body, while a coroner investigator examines the body, the scene of the crime. So coroner investigators may be from the medical profession, law or with training in criminal law.

Toxicologist:

A toxicologist is engaged in the development and implementation of laboratory and field studies to find out the short- and long- term effects of different toxins on human beings, animals, plants and the environment. He/she also thinks of ways and means to eliminate and minimize the negative effects of the already existing toxins.

Geneticist / Clinical Geneticist:

A clinical geneticist is a medical specialist who applies his knowledge of genetics and is skilled enough to evaluate birth defects, genetic disorders, familial cancers and chromosomal abnormalities. They work closely with genetic counsellors to support patients, families and clinical teams in the management of genetic conditions. Clinical geneticists help identify families at possible risk of a genetic condition by assessing a patient’s physical features and medical history, gathering and analyzing family history and inheritance patterns and calculating chances of recurrence. They provide information about genetic testing and related procedures. A clinical geneticist could easily advice on options, including treatment options, for patients when the doctor suspects a genetic problem.

Physiologist:

Physiologists are highly trained medical person with zeal and expertise in studying how humans, plants, animals and cell function. A physiologist generally focuses on the functioning of the human body such as energy procurement and utilization, blood circulation, excretion, defence systems against infection, repair mechanisms reproduction, nutrition, digestion, absorption, metabolism and diseases.

Conclusion:

This long list of medical specialties and subspecialties shows the many options students have for making their career in medicine. Select a career that challenges you, aligns with your career goals, and provides your desired lifestyle. Narrowing down your options and working toward your intended field of medicine early on in your medical school journey can give you an advantage.

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In this article, we shall study the meaning of chemistry and its different branches.

What is Chemistry?

Science word is derived from the Latin word ‘Scientia’ which means ‘to know’. Science has many disciplines, Chemistry is one of them. It is the study of materials that make up the universe and changes which these materials undergo.

It is defined as the study of the composition, structure, and properties of matter and the reactions by which one form of matter may be converted into another form.

Chemistry is a central science. It can be explained as follows. Study of chemistry is being done from the ancient time all over the world. It is ancient science but its major development has taken in the modern era. Chemistry provides the support structure to all other sciences like physics, biology, geology, environmental science and engineering.

The significance of the Study of Chemistry:

Food: 

Artificial sweetener, flavouring agent, food preservatives are chemical compounds and are man-made.

Green revolution in India has taken place due to the use of mechanized agriculture with the use of chemical fertilizers, insecticides, pesticides etc.

Sodium benzoate, sodium meta bisulphate, and salicylic acid are food preservatives.

Clothing: 

We get cotton, wool, jute, silk as natural fibres (fibres) for making clothes. But synthetically prepared fibres like nylon, rayon, dacron are superior to the natural fibres.

Shelter:

For shelter steel, aluminium, copper, plastic is required. They are extracted or produced by chemical processes.

Medicines:

Antibiotics, synthetic drugs, antiseptics, anaesthetics, antipyretics, analgesics, vitamins and hormones are used in the improvement of human life.

Some important drugs areTaxol (a Life-saving drug for cancer ), Cisplatin (Cancer therapy), Azidothymidine (AIDS treatment), Prophylactics (Disease preventing), L-Dopa (Parkinson’s disease), Human insulin (Diabetes treatment), Tamiflu (Swine flue).

Agriculture:

Chemical fertilizers like urea, calcium nitrate, ammonium sulphate etc. and insecticides like D.D.T.  (dichloro diphenyl trichloroethane),  gammexane, methoxychlor etc. are used for the improvement of agricultural yield.

Transportation and Electrical Energy:

Fuels like petrol, diesel, C.N.G. etc. are good fuels which are used in automobiles. This energy can be used to generate electrical energy. In the field of electrochemistry Daniel cell, a Lead storage cell, dry cells, fuel cells are used to produce electricity.

Energy resources:

Petroleum, wood, coal, charcoal, nuclear fuel are chemical substances which are used to satisfy our energy requirements.

Health:

Carbohydrates, proteins, fats, vitamins and minerals are the chemical substances which are required for the maintenance of our body functions and health.

Industry and Everyday Life:

kerosene, gasoline, petrol, diesel, compressed natural gas (C.N.G.), liquefied petroleum gas (L.P.G.), Paraffin (Wax), Vaseline, Boot Polish, Fibres like wool, silk, cotton, jute, Synthetic fibres like nylon, terylene, polyester, Solvents like water, chloroform, alcohol, benzene, acetone, carbon tetra chloride , substances like poly vinyl chloride (PVC), polyethylene, bakelite, rubber, Paints, varnishes, dyes, indigo, azodyes, printing inks, detergents, soaps, perfumes, insecticides, fertilizers are chemical  compounds.

All engineering materials like iron, steel, stainless steel, aluminium, zinc, tin, copper, galvanized steel, alloys like brass, amalgams, precious metals like silver, gold, platinum are extracted, purified, synthesized, analyzed using processes based on chemical technology.

Education:

There are para chemical branches like Biochemistry, Biotechnology, Pharmacy, Herbal Science, Toxicology, Archaeology and Environmental Science.

Branches of Chemistry:

Different branches of chemistry are

Physical Chemistry:

The branch of chemistry that deals with the structure of matter, the energy change and theories, laws, principles that explain the transformation of matter from one form to another.

Inorganic Chemistry:

This is the branch of chemistry that deals with the chemistry of elements other than carbon and their compounds.

Organic Chemistry:

This is the branch of chemistry that deals with the chemistry of carbon and its compounds.

Analytical Chemistry:

This is the branch of chemistry that deals with the separation, identification and quantitative determination of compositions of different substances.

Industrial Chemistry:

This branch deals with the chemistry involved in industrial processes

Nuclear Chemistry:

This branch deals with the study of nuclear reactions as nuclear fission, nuclear fusion and transmutations.

Biochemistry:

This is the chemistry of the substances consisting of living organisms.

In the next article, we shall discuss the chemical classification of substances viz: Pure substances, mixtures, elements, compounds, and their characteristics.

Next Topic: Chemical Classification of Substances

Science > Chemistry > Introduction to Chemistry > Significance of the Study of Chemistry

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In the previous article, we have studied the importance of biology. In this article, we shall study different branches of biology.

On the Basis of Kind of Organism:

Depending upon the kind of organism, the branches of biology are as follows:

• Botany: Botany is the scientific study of plants which include algae, fungi, lichens, mosses, ferns, conifers, and flowering plants.
• Zoology:  Zoology involves the study of animals including their classification, their history, their anatomy, and physiology,
• Microbiology: Microbiology is the study of all living organisms that are too small to be visible to the naked eye. This includes bacteria, archaea, viruses, fungi, prions, protozoa, and algae, collectively known as ‘microbes’.
• Human Biology: Human biology is the branch of biology that deals with human beings and human populations. It includes all the aspects of the human as an organism including genetics, ecology, anatomy and physiology, anthropology, and nutrition. Human biology is related to other fields of biology such as medicine, primate biology, and biological anthropology.

On the Basis of Group of Organisms:

Depending upon the group of organisms under the study, the branches of biology are as follows:

• Bacteriology: The science and study of bacteria and their relation to medicine and to other areas such as agriculture (e.g., farm animals) and the industry is called Bacteriology.
• Virology: Virology is the study of viruses and virus-like agents, including (but not limited to) their taxonomy, disease-producing properties, cultivation, and genetics. It is often considered a part of microbiology or pathology.
• Mycology: Mycology is the branch of biology that deals with the study of fungi. It includes the research of their genetic and biochemical properties and their use in medicine and food along with their hazards.
• Entomology: Entomology is a branch of zoology that studies insects and how they interact with their environment, other species and humans.
• Ichthyology: Ichthyology is the branch of zoology devoted to the study of fishes, which includes bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha).
• Herpetology: Herpetology is the branch of zoology concerned with the study of amphibians,  reptiles. Batrachology is a further subdiscipline of herpetology concerned with the study of amphibians only.
• Ornithology: Ornithology is the scientific field dedicated to the study of birds.

On the Basis of Approach to Study:

Depending upon the approach of the study, the branches of biology are as follows:

• Anatomy: It is the scientific study focusing on the physical structures and parts of organisms (plants and animals).
• Morphology: Morphology is a branch of biology dealing with the study of the form and structure (internal and external)  of organisms and their specific structural features
• Histology: Histology is the scientific study of the fine detail of biological cells and tissues using microscopes
• Cytology: The study of structure and function of plant and animal cells.
• Physiology: The branch of biology dealing with the functions and activities of living organisms and their parts, including all physical and chemical processes is called physiology.
• Embryology: Embryology is the study of the development of an embryo from the stage of ovum fertilization through to the fetal stage.
• Taxonomy or Systematics: The science of identifying, naming, grouping and classifying plants and animals is called taxonomy or systematics.
• Ecology: Ecology is the scientific study of the interactions between organisms and their environment.
• Biogeology: The study of the interaction between the Earth’s biosphere and the lithosphere.
• Biogeography: Biogeography is a study of the distribution of various species and ecosystems geographically and throughout geological time and space.
• Paleontology:  the study of fossils to determine the structure and evolution of extinct animals and plants and the age and conditions of deposition of the rock strata in which they are found is called Palaeontology.
• Evolution: evolution is the branch of biology which studies the change in the characteristics of a species over several generations and relies on the process of natural selection.
• Genetics: Genetics is a branch of biology that deals with heredity and variations.
• Parasitology: Parasites are those organisms that live on or inside other organisms called the host and draw nourishment from the host are called parasites. The study of parasites is called parasitology. It includes the study of three major groups of animals: parasitic protozoa, parasitic helminths (worms), and those arthropods that directly cause disease or act as vectors of various pathogens.
• Pathology: It is a branch of biology which studies diseases in plant and animals and their treatment.
• Immunology: The immune system protects us from infection through various lines of defense. Immunology is the study of the immune system.
• Eugenics: The study of or belief in the possibility of improving the qualities of the human species or a human population, especially by such means as discouraging reproduction by persons having genetic defects or presumed to have inheritable undesirable traits. Thus it is a science which aims to improve the human race through controlled heredity.
• Biochemistry: Biochemistry is the study of the processes behind all living organisms,

On the Basis of Agriculture and Allied Industries:

With respect to agriculture and allied industries, the branches of biology are as follows:

• Agriculture: It is a branch of biology which deals with raising crops and live stocks such as cows, buffaloes, etc.
• Veterinary Science:  The branch of medicine that deals with the causes, diagnosis, and treatment of diseases and injuries of animals, especially domestic animals.
• Marine Biology: Marine biology is the study of marine organisms, their behaviours, and their interactions with the environment.
• Horticulture: Horticulture is the science and art of producing, improving, marketing, and using fruits, vegetables, flowers, and ornamental plants.
• Animal Husbandry: It is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, eggs, or other products. It includes day-to-day care, selective breeding and the raising of livestock like cows, buffaloes, etc.
• Sericulture: Sericulture, or silk farming, is the rearing of silkworms for the production of raw silk.
• Pisciculture: The breeding, rearing, and transplantation of fish by artificial means is called pisciculture.
• Tissue Culture: Tissue culture, a method of biological research in which fragments of tissue from an animal or plant are transferred to an artificial environment in which they can continue to survive and function.
• Molecular Biology: Molecular biology is a branch of science concerning biological activity at the molecular level. The field of molecular biology overlaps with biology and chemistry and in particular, genetics and biochemistry.
• Biotechnology: Biotechnology is the use of biological processes, organisms, or systems to manufacture products intended to improve the quality of human life.
• Cloning: Cloning is a process of asexual reproduction to create offspring that are genetically identical to the parent.
• Bioengineering: It is the branch of biology which with the help of engineering science help in making artificial limbs, joints and other parts of the body using engineering materials and techniques. It also includes the improvement of crops for disease resistance and yield.
• Biomedical Engineering: Biomedical engineering is the application of engineering principles to the fields of biology and health care. Biomedical engineers work with doctors, therapists and researchers to develop systems, equipment, and devices in order to solve clinical problems. The job includes the design, development, production, and maintenance of medical instruments.
• Nuclear biology: Nuclear biology or radiobiology is a branch of biology which studies the effect of radioactivity on living cell and also deals with the development and production of nuclear medicines for diagnosis and treatment of the diseases.
• Space Biology: The study of the survival of living things in a space is called space biology.
• Genomics: Genomics is a study of the genomes of organisms. Its main task is to determine the entire sequence of DNA or the composition of the atoms that make up the DNA and the chemical bonds between the DNA atoms.
• Bioinformatics: Bioinformatics is the application of information technology to the study of living things, usually at the molecular level. Bioinformatics involves the use of computers to collect, organize and use biological information to answer questions in fields like evolutionary biology.
• Biometrics: Biometrics is a technological and scientific authentication method based on biology and used in information assurance (IA). Biometric identification authenticates secure entry, data or access via human biological information such as DNA or fingerprints.
• Forensic science: The forensic sciences are used around the world to resolve civil disputes, to justly enforce criminal laws and government regulations, and to protect public health. The field of forensic science depends on other branches of science, including physics, chemistry, and biology, with its focus being on the recognition, identification, and evaluation of physical evidence. It has become an essential part of the judicial system to achieve information relevant to criminal and legal evidence.
• Genetic Engineering: Genetic engineering refers to the direct manipulation of DNA to alter an organism’s characteristics (phenotype) in a particular way.

On the Basis of Medical Sciences:

On basis of medical sciences, the branches of biology are as follows:

• Gynecology and Obstetrics: Gynaecology normally means treating women who aren’t pregnant, while obstetrics deals with pregnant women and their unborn children, but there is lots of crossover between the two.
• Orthopedics: It is a branch of medical science which is devoted to the diagnosis, treatment, prevention, and rehabilitation of injuries, disorders, and diseases of the body’s musculoskeletal system. This system includes bones, joints, ligaments, muscles, nerves, and tendons.
• Opthalmology: It is the branch of medicine that deals with the anatomy, physiology, and diseases of the eyeball and orbit.
• Dentistry: It is a branch of medicine that consists of the study, diagnosis, prevention, and treatment of diseases, disorders, and conditions of the oral cavity.
• Oncology: Oncology is the branch of medicine that researches, identifies and treats cancer.
• Cardiology: Cardiology is a branch of medicine that concerns diseases and disorders of the heart, which may range from congenital defects through to acquired heart diseases such as coronary artery disease and congestive heart failure.
• Urology: Urology is a surgical specialty that deals with the treatment of conditions involving the male and female urinary tract and the male reproductive organs.
• Nephrology: Nephrology is a branch of medical science that deals with diseases of the kidneys.
• Pediatrics: Pediatrics is the branch of medicine dealing with the health and medical care of infants, children, and adolescents from birth up to the age of 18.
• Dermatology: Dermatology is the branch of medicine dealing with diagnosing and treating skin diseases affecting the skin, hair, and nails.
• Physiotherapy: Physiotherapy is a branch of medicine which uses a treatment method that focuses on the science of movement and helps people to restore, maintain and maximize their physical strength, function, motion and overall well-being by addressing the underlying physical issues.

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List of Sub-Topics:

• Introduction
• Study of Biology as the Study of Life
• Biology and Nature
• Biology and Health
• Biology and Food
• Biology and Horticulture
• Biology and Agriculture
• Biology and Animal Husbandry
• Biology and Medical Science
• Conclusion
• Related Topics

Biology is the science that studies living things, including plants, animals, and human beings. It helps us understand life and the different processes that take place in living organisms, such as growth, reproduction, and interaction with the environment. By studying biology, we learn how living things survive and help maintain the balance of nature. Biology is closely connected to our everyday life. It plays an important role in fields like medicine, agriculture, animal husbandry, food production, environmental protection, and biotechnology. The knowledge of biology has helped humans improve healthcare, develop new medicines, increase food production, and protect endangered plants and animals. Therefore, biology is not just the study of life; it is a subject that greatly contributes to human progress and the well-being of society.

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Biology is the branch of science that studies living organisms, including plants, animals, and human beings. The word “Biology” is derived from two Greek words: bios meaning life and logos meaning study. Although it is difficult to determine exactly when the study of biology began, the ancient Greeks are considered pioneers in organizing and developing this field of science.

The study of biology also flourished in ancient India between 2500 B.C. and 650 B.C. Great scholars such as Charaka and Sushruta practiced medicine effectively and contributed significantly to medical science. In Greece, Hippocrates (460–377 B.C.), known as the “Father of Medicine,” introduced a rational approach to the treatment of diseases.

Another important Greek scholar was Aristotle (384–322 B.C.), often called the “Father of Biology.” He studied animals, including marine organisms, in great detail. Although some of his ideas, such as believing the heart controlled intelligence, were incorrect, his observations laid the foundation for future biological studies. His student, Theophrastus (370–285 B.C.), made important contributions to the study of plants and is regarded as the “Father of Botany.”

During the Renaissance period, Leonardo da Vinci (1452–1519) advanced the study of human anatomy by dissecting human bodies and drawing detailed illustrations of body systems. These drawings greatly improved the understanding of anatomy and medicine. Later, in 1543, Andreas Vesalius published De humani corporis fabrica (The Structure of the Human Body), which accurately described human anatomy through detailed illustrations.

For a long time, biology mainly focused on classifying organisms and studying the visible structure of living beings. However, the invention of the microscope by Antonie van Leeuwenhoek opened a completely new world of microscopic life. In the 19th century, important scientific ideas such as the theory of evolution and cell theory were proposed and accepted, leading to rapid progress in biology. The 20th century witnessed the growth of modern fields like genetics and biotechnology.

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Importance of the Study of Biology

Biology and Nature

The natural world is full of an amazing variety of plants and animals. Biology helps us understand the similarities and differences among living organisms. Botanical gardens, parks, and zoos not only provide knowledge but also offer enjoyment and recreation.

Plants are cultivated to beautify homes and surroundings, while flowers are used for decoration and celebrations. Keeping pets and caring for animals can also improve emotional well-being and help reduce stress-related illnesses. Through the study of biology, endangered species of plants and animals can be protected and conserved for future generations.

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Biology and Health

Biology helps us understand the structure and functions of the human body. By studying anatomy and physiology, we learn how different organs work and how diseases affect the body.

Many diseases are caused by microorganisms such as bacteria, viruses, fungi, and parasites. Diseases like cholera, plague, and malaria have caused major epidemics in human history. Biology helps scientists identify disease-causing organisms, understand how diseases spread, and develop methods for prevention and treatment.

The study of biology has also made modern surgery possible. Damaged organs and body parts can now be repaired or replaced through advanced medical techniques. Many medicines are obtained from plants, while antibiotics are produced from fungi and microorganisms. Veterinary science, another branch of biology, focuses on the treatment and care of domestic and pet animals.

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Biology and Food

Human beings depend on both plants and animals for food. Vegetables, fruits, cereals, fish, chicken, goats, prawns, crabs, milk, and eggs are all important sources of nutrition. Milk from cows and buffaloes is used to produce butter, cheese, curd, and ghee.

Biology helps improve the quality and quantity of food production. For example, hybrid cattle breeds can produce more milk with higher fat content. Scientific knowledge also supports poultry farming, animal husbandry, and veterinary care, helping to protect animals and crops from diseases and improving food production.

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Biology and Horticulture

Botany, a branch of biology, plays an important role in horticulture. Scientists develop new varieties of ornamental plants with attractive flowers, unique leaf shapes, and better growth characteristics through hybridization.

Biology has also helped in producing seedless varieties of fruits such as guava, banana, grapes, and papaya, which are more convenient and commercially valuable.

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Biology and Agriculture

The rapid growth of the human population has increased the demand for food. Biology has therefore become essential in modern agriculture.

With the help of biological research, scientists have developed high-yielding and disease-resistant crop varieties. Farmers can now grow multiple crops in a year by reducing the crop development cycle. Biology also helps in controlling pests, insects, and weeds through the use of pesticides, fungicides, and weedicides.

Understanding plant diseases allows farmers to prevent crop damage and improve agricultural productivity. In addition, food preservation methods such as pasteurization, drying, freezing, and irradiation help increase the shelf life of food products.

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Biology and Animal Husbandry

Animals provide many useful products that are important in daily life and industry. Leather is obtained from the hides of mammals, silk from silkworms, wool and fur from sheep and lambs, fish oil from fishes, honey and wax from honey bees, lac from lac insects, and pearls from pearl oysters. Other animal products such as shells, horns, and corals are also valuable.

To increase the production of these products, different branches of animal husbandry are practiced, including poultry farming, pig farming, fish farming (pisciculture), silk farming (sericulture), bee keeping (apiculture), and lac culture. Proper knowledge of the habits, habitats, food requirements, and life cycles of animals helps improve productivity and ensures better care and management of these organisms.

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Biology and Medical Science

Biology and medical science are deeply connected because medicine depends on the understanding of living organisms, especially the human body. Biology helps us learn about the structure and functions of different organs, tissues, and body systems. This knowledge allows doctors and scientists to identify diseases and find proper treatments.

The study of biology also explains how harmful microorganisms like bacteria, viruses, fungi, and parasites spread diseases. With this understanding, scientists have been able to develop medicines, vaccines, and antibiotics that save millions of lives. Biology also helps in understanding hereditary diseases through genetics and supports modern treatments such as organ transplantation, blood transfusion, and gene therapy.

Many medicines are obtained from plants and microorganisms, which shows the importance of biology in the field of medicine. In addition, biology creates awareness about hygiene, nutrition, and healthy living, helping people prevent diseases and maintain good health.

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Conclusion:

Biology plays a vital role in improving human life and understanding the natural world. It helps us study living organisms, maintain good health, increase food production, protect the environment, and develop advances in medicine, agriculture, horticulture, and animal husbandry. The knowledge of biology not only improves the quality of human life but also helps in conserving plants and animals for future generations. As science and technology continue to grow, biology remains one of the most important fields for the progress and well-being of society.

Related Topics:

• Biology and Nature
• Biology and Health
• Biology and Food
• Biology and Agriculture
• Biology and Medical Science
• Biology and Criminal Investigation

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