Multiple Choice
Regarding the heart's valves,what is a function of the papillary muscles?
A) The papillary muscles close the semilunar valve.
B) These muscles prevent backward expulsion of the atrioventricular valve.
C) They close the atrioventricular valve.
D) The papillary muscles open the semilunar valve.
Correct Answer:
Verified
Correct Answer:
Verified
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