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Write the chief functional activity of each of the following:(a) Blood platelets …………………………..(b) Neutrophils ………………………………(c) Erythrocytes …………………………….(d) Lymphocytes ……………………………(e) Bone marrow …………………………… |
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Answer» (a) Blood platelets are involved in blood clotting or coagulation. Blood platelets integrate at the site of injury to release thromboplastin which initiates the process of blood clotting. (b) Neutrophils perform phagocytosis i.e. they engulf pathogens that enter the blood stream and destroy them. (c) Erythrocytes transport oxygen from the lungs to the tissues in the form of an unstable compound oxyhaemoglobin and transport carbon dioxide from the tissues to the lungs. (d) Lymphocytes produce antibodies against pathogens which enter the blood stream. In some\ cases they also perform phagocytosis. (e) Bone marrow is involved in formation of RBCS and WBCs. It is also involved in the destruction of old and weak RBCs. |
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