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Question: Answered & Verified by Expert
The heart sound heard on the stethoscope when the blood pressure in the artery is maximum is due to
BiologyBody Fluids and CirculationNEET
Options:
  • A Closure of semi-lunar valves
  • B Closure of atrio-ventricular valves
  • C Opening of semi-lunar valves
  • D Opening of atrio-ventricular valves
Solution:
2265 Upvotes Verified Answer
The correct answer is: Closure of atrio-ventricular valves
The blood pressure in the artery is maximum during the systole of the heart. There are two heart sounds lub and dub. Lub is a systolic heart sound which is produced due to the closure of atrioventricular valves (bicuspid and tricuspid valves). Dub is a diastolic heart sound which is produced due to closure of semilunar valves (aortic and pulmonary valves)

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