Biology, asked by manvi22, 1 year ago

xplain when and how two sounds of heart are produced???

Answers

Answered by 6Shivam92

The sound of a heartbeat is caused by the heart valves opening and closing as they pump blood. When the heart is working properly, blood can only flow in one direction. The valves make this possible by opening and closing in exact coordination with the heart’s pumping action. Put your head on someone's chest and the heartbeat sounds a bit like lub-DUB, lub-DUB, lub-DUB. The" lub" is the sound of the tricuspid and mitral valves closing. The" DUB" is the sound of the aortic and pulmonary valves closing. Together, they're the sound of someone's heart doing its job.

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Answered by royboy

Lubb and Dubb are two heart beat produced. When A-V valve closes lubb is produced. It is of louder pitch and duration is 0. 16 sec. Dubb is produced when semi-lunar valve is closed and it is of loudness is less. It's of 0.1 sec.
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