Differentiate between lub and dub sound.

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Solution

Lub sound refers to the first sound of heart tone produced by the closure of the atrioventricular valve.
Dub sound refers to the second sound of heart tone produced by the closure of semilunar valves.
Lub sound Dub sound
The first sound of a heartbeat. The second sound of a heartbeat.
The lub sound corresponds with ventricular systole. The dub sound corresponds with atrial systole,
Closure of the atrioventricular valve produces a loud lub sound. Closure of aortic and pulmonary valve produces soft dub sound.

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Similar questions

When are the sound "LUB" and "DUB" produced respectively during heart beat?

Lub-dub sound is due to

but why does this lub-dub sound occur?

Differentiate between the following pairs on the basis of what is mentioned within brackets:

(i) LUB and DUB (names of the valves whose closure produce the sound)

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Lub sound	Dub sound
The first sound of a heartbeat.	The second sound of a heartbeat.
The lub sound corresponds with ventricular systole.	The dub sound corresponds with atrial systole,
Closure of the atrioventricular valve produces a loud lub sound.	Closure of aortic and pulmonary valve produces soft dub sound.