Science, asked by jain2133, 4 months ago

What is pulse ? why does heart make lub- dub
Sounds ?​

Answers

Answered by Anonymous
6

Explanation:

The “ lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound,” dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole.

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