2nd hea sound is due to
Correct Answer: Closure of aoic valve
Description: The second is a shoer, high-pitched "dup" (second sound), caused by vibrations associated with the closure of the aoic and pulmonary valves just after the end of ventricular systole.Ref: Ganong&;s Review of medical physiology 25th edition. Page: 542
Category:
Physiology
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