Multiple Choice
If the cusps of an atrioventricular valve are damaged or functionally impaired so that they do not close completely during the normal point in the cardiac cycle, blood may flow backwards. This is called ________.
A) ischemia
B) regurgitation
C) thrombosis
D) automaticity
E) nodal depolarization
Correct Answer:

Verified
Correct Answer:
Verified
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