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Human Biology

Buccal Cavity: Teeth

Science > Biology > Digestion and absorption in Human > Buccal cavity – Teeth In this article we shall study, the characteristics of teeth (dentition), different types of teeth and the structure of the tooth. The teeth are the strongest, hardest and rigid substances in the human body specialized for the biting and grinding of […]

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Human Biology

Buccal cavity – Mouth

Science > Biology > Digestion and absorption in Human > Buccal cavity – Mouth The digestive system in humans consists of an alimentary canal and associated digestive glands. The human alimentary canal (aliment: nourish) is a continuous muscular digestive tube about 8 to 10 m long that runs through the body. It is open at two ends […]

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Human Biology

Disorder Associated With RBCs Anaemia (Anemia)

Science > Biology > Human Anatomy and Physiology > Cardiovascular System > Disorder Associated With RBCs Anaemia (Anemia) Anaemia or Anemia is defined as a decrease in the ability of the blood to carry oxygen due to (1) a decrease in the total number of erythrocytes, each having a normal quantity of hemoglobin, or (2) […]

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Human Biology

Erythrocytes

Science > Biology > Human Anatomy and Physiology > Cardiovascular System > Composition of Blood: Erythrocytes When a human blood sample is prevented from clotting and spun in a test tube (centrifuged), in a machine called a centrifuge, the blood separates into a straw coloured liquid called plasma and a dark brown mass of blood […]

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Human Biology

Blood Plasma

Science > Biology > Human Anatomy and Physiology > Cardiovascular System > Composition of Blood: Blood Plasma When a human blood sample is prevented from clotting and spun in a test tube (centrifuged), in a machine called a centrifuge, the blood separates into a   straw coloured liquid called plasma and a dark brown mass […]

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Human Biology

The Blood

Science > Biology > Human Anatomy and Physiology > Cardiovascular System > The blood, an Overview In the Cardiovascular system, the ‘‘heart’’ (cardi) pumps the blood in a ‘‘little circle’’ (circul), which travels through ‘‘little vessels’’ (vascul). In human, the transportation is done through blood circulatory system and lymphatic system. Thus two fluids move through […]

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Human Biology

Circulatory System and its Functions

Science > Biology > Human Anatomy and Physiology > Cardiovascular System > Circulatory System and its Function In living things, many substances such as food, gases, minerals salts, hormones and waste products have to be transported from one part of the body to another. Plants and animals have a system of transporting substances throughout their body. […]

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Human Biology

Nutrition

Science > Biology > Digestion and absorption in Human > Nutrition Energy is required by living beings for performing different activities. Energy is contained in the food. Food can be defined as a collection of chemicals taken by an organism for the purpose of the growth, repair, and replacement of body cells, energy releases, and […]