A man suffers a leg wound which causes minor blood loss. As a result of bleeding, the process of primary hemostasis is activated. What occurs in primary hemostasis?
A) Severed blood vessels constrict.
B) Thromboplastin is released.
C) Prothrombin is converted to thrombin.
D) Fibrin is lysed.
Ans: A
Feedback:
Primary hemostasis involves the severed vessel constricting and platelets collecting at the injury site. Secondary hemostasis occurs when thromboplastin is released, prothrombin converts to thrombin, and fibrin is lysed.
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