Blood does not coagulate inside the body due to the presence of___________?
Correct answer: D. Heparin
- A. Haemoglobin
- B. Fibrin
- C. Plasma
- D. Heparin
Explanation
Heparin is a natural anticoagulant that inhibits clotting reactions within blood vessels. Fibrin, in contrast, is the protein thread that helps form a clot when coagulation occurs.
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The human body is studied through its organ systems, including digestion, respiration, circulation, excretion, nervous coordination, reproduction and immunity. Coverage also includes nutrients and deficiency diseases, hormones, blood groups, common infections, vaccines, sanitation and basic first aid, while distinguishing communicable diseases from inherited and lifestyle disorders.
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