Multiple Choice
Contraction of the papillary muscles would
A) eject blood from the ventricles.
B) prevent the AV valves from protruding into the atria.
C) close the semilunar valves.
D) cause the atria to eject their contents into the ventricles.
E) open the semilunar valves.
Correct Answer:
Verified
Correct Answer:
Verified
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