Inappropriate formation of platelets or fibrin clots that obstructs blood vessels is called:

a. Thrombophilia
b. Thrombosis
c. Embolus
d. Factor V Leiden


ANS: B
Thrombosis is the inappropriate formation of platelets or fibrin clots that obstruct blood vessels. Thrombophilia refers to congenital abnormalities that increase the risk of thrombosis; factor V Leiden is one such risk factor. An embolus forms when a piece of a thrombus breaks off and travels to another location via the circulatory system.

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