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In the Lup-Dup Sound of a Beating Heart,which of the Following

Question 81

Multiple Choice

In the lup-dup sound of a beating heart,which of the following make the first heart sound?


A) closing of the atrioventricular valves
B) closing of the pulmonary valve
C) closing of the aortic valve
D) the contraction of the left ventricle
E) the contraction of the right ventricle

Correct Answer:

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