Multiple Choice
A heart murmur is a distortion of the heartbeat due to blood flowing back through a valve that should be closed.If the heart sound is lub-dub-ssshhh,the most likely cause is a failure of the
A) atrioventricular valves.
B) semilunar valves.
C) mitral (bicuspid) valve.
D) AV node to signal contraction.
E) sinoatrial node to signal contraction.
Correct Answer:

Verified
Correct Answer:
Verified
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