'Lubb' sound is produced by closure of:
Correct answer: B. Atrioventricular valves
- A. Outlet valves
- B. Atrioventricular valves
- C. Semilunar valves
- D. Inter ventricular valves
Explanation
"Lubb" sound is produced when inlet valves or atrioventricular valves close and their flaps strike with each other.
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