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Periodic Motion

Name of first...

Question

Name of first heart sound when all valves close

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Solution

Heart sound:
Systole sound is produced by the closure of valves.
The first heart sound when AV valves close is heard as ‘LUB’
Diastole's second heart sound is heard as ‘DUB’ when blood is ‘squeezed out of the heart.

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Name the following:

The sound produced when the atrio-ventricular valves close in the heart.

Q. The first heart sound is semilunar valves

The first heart sound results from the closure of semilunar valves.

Q. The heart sound "murmur' is heard during a) Closing of bicuspid and tricuspid valves (b) Closer of semiluner valves c) leaking of blood through valves (d) All of these Give proper explanation.

Q. Read the following statements carefully and select correct choice from given.
(a) First heart sound lub is produced due to closure of atrioventricular valves.
(b) First heart sound is of longer duration than second heart sound dub.

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