Heparin is a naturally occurring anticoagulant produced by basophils and mast cells, particularly abundant in tissues around blood vessels. It works by enhancing the activity of antithrombin, a protein that inactivates thrombin and other clotting factors, thereby preventing unnecessary blood clotting in undamaged vessels.
In an undamaged blood vessel, conversion of Prothrombin to Thrombin is prevented by
Asked in PPSC CS Prelims 2018 · Topic: Circulatory System (Blood Coagulation and Haemostasis)
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