Multiple choice

Which of the following is glycosaminoglycan product of mast cells, which acts as anticoagulant?

  1. Hirudin

  2. Heparin

  3. Fibrinogen

  4. Serotonin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Heparin is a glycosaminoglycan (sulfated polysaccharide) produced and stored in mast cells. It acts as a potent anticoagulant by enhancing antithrombin activity, inhibiting clotting factors. Hirudin is from leeches, fibrinogen is a clotting protein precursor, and serotonin is another mast cell mediator but not an anticoagulant.

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