RE-NEET 2024 Zoology Heart Sounds MCQ Question
‘Lub’ sound of Heart is caused by the
closure of the semilunar valves
opening of tricuspid and bicuspid valves
opening of the semilunar valves
closure of the tricuspid and bicuspid valves
Correct Answer
Detailed Explanation
The 'lub' sound is the first heart sound, caused by the closure of the tricuspid and bicuspid (mitral) valves at the start of ventricular systole.
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