HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Typical lub-dub sound heard in heart beat are due to
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Closing of bicuspid and tricuspid valves followed by semilunar valves.
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Closing of semilunar valves
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Blood pressure through aorta
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Closer of bicuspid valves
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Explanation:
Detailed explanation-1: -The first sound LUB is produced when the atrioventricular valves i.e. tricuspid and bicuspid valves close at the start of ventricular systole. The second sound DUB is produced at the beginning of ventricular diastole when the pulmonary and aortic semilunar valves close.
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