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What is a lub dub sound

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What is a lub dub sound

Posted by Nikil Saini 7 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Prachi Chandila 7 years, 8 months ago

Lubb--this sound is caused by the vibration set upon by the closure of tricuspid and bicuspid valveby the contraction of ventricular muscle. Dubb--it is caused by the closure of semilunar valve and marks the end of ventricular systole. The lubb sound is low pitched and the dubb sound is high pitched.☺☺☺☺

1Thank You

Sonu 7 years, 8 months ago

A sound create by heart

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