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Explain Heart Sounds - CBSE (Science) Class 11 - Biology

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Question

Explain heart sounds

Solution

Heart sounds are noises generated by the closing and opening of the heart valves. In a healthy individual, there are two normal heart sounds called lub and dubLub is the first heart sound. It is associated with the closure of the tricuspid and bicuspid valves at the beginning of systole. The second heart sound dub is associated with the closure of the semilunar valves at the beginning of diastole.

These sounds provide important information about the condition and working of the heart

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APPEARS IN

 NCERT Solution for Biology Textbook for Class 11 (2018 to Current)
Chapter 18: Body Fluids and Circulation
Q: 13 | Page no. 289

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Solution Explain Heart Sounds Concept: Circulatory Pathways - Cardiac Cycle.
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