Biology, asked by jyotilaxmi56577, 1 year ago

what is (lub dub) sound​

Answers

Answered by ujjwalarora728
0

Answer:

10 to 20 hertz frequecy

Answered by mayankjoshi640
2

Answer:

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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