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The heart sound heard on the stethoscope...

The heart sound heard on the stethoscope when the blood pressure in the artery maximum is due to

A

Closure of semi-lunar valves

B

Closure of atrio-ventricular valves

C

Opening of semi-lunar valves

D

Opening of atrio-ventricular valves

Text Solution

Verified by Experts

The correct Answer is:
B
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