"Systole" and "diastole" refer to the _______ and _______, respectively, of the _______ in mammals.
A) relaxation; contraction; ventricles
B) contraction; relaxation; ventricles
C) relaxation; contraction; atria
D) contraction; relaxation; atria
E) contraction; relaxation; semi-lunar valves
Correct Answer:
Verified
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