Platelet agonists are substances that:

a. Bind to phospholipid in the platelet membrane
b. Promote apoptosis
c. Activate platelets
d. Enhance megakaryocyte proliferation


ANS: C
Platelet agonists include thromboxane A2 (TXA2), ADP, and thrombin. Each of them binds to its transmembrane receptor, and platelet activation is the result.

Health Professions

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