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Assertion : First heart sound (LUBB) is ...

Assertion `:` First heart sound (LUBB) is produced at the beginning of ventricular systole stage.
Reason `:` During ventricular systole semilunar valves are closed.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

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During ventricular systole in human heart

Semilunar valves open during ventricular diastole.

Assertion : In joint diastole, all the four chamber of heart are in relaxed state. Reason : The tricuspid and bicuspid valves are open and semilunar valves are closed at this stage.

Differentiate between the following pairs on the basis of what is given in brackets: Beginning of the ventricular systole and the end of ventricular systole. (type of heart sound)

Ventricular systole and Ventricular diastole. (Type of heart sound produced)

The ______and __ valves close shortly after the start of ventricular systole..

How much time does ventricular systole last? Which valves close during this phase?

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

Assertion : The pause between the end of the second sound and the beginning of the first sound coincides with ventricular diastole. Reason : The second sound (dupp) is created by the closure of the semilunar valve.

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

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