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| Q. |
Blood does not coagulate inside the body due to the presence of – |
| A. | Plasma |
| B. | Haemoglobin |
| C. | Heparin |
| D. | Fibrin |
| Answer» C. Heparin | |
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Explanation: Heparin is a naturally-occurring anticoagulant produced by basophils and mast cells. Heparin acts as an anticoagulant, preventing the formation of clots and extension of existing clots within the blood. Heparin is present in the walls of blood vessels where it doesn't allow blood to clot. |
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