Multiple Choice
What is true about heart valves?
A) They operate passively (no active contraction required) .
B) They enforce a one-way blood flow through the heart, operate passively (no active contraction required) , and separate atria from ventricles, and ventricles from the large arteries that leave them.
C) They enforce a one-way blood flow through the heart.
D) They separate atria from ventricles, and ventricles from the large arteries that leave them.
Correct Answer:
Verified
Correct Answer:
Verified
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