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Assertion : The pause between the end o...

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.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false.

D

If both assertion and reason are false

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The correct Answer is:
B
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Assertion : LUBB (First Sound) is of shorter duration and sharp sound. Reason : It is created by the closure of the semiluar valves.

First heart sound results from a closure of semilunar valves.

Second heart sound-called dupp, is heard at the end of ventricular systole.

Which of the following statement is CORRECT ? I. Heart, the mesodermally derived organ, is situated in the thoracic cavity, in between the two lungs , slightly tilted to the left. II. During joint diastole , tricuspid and bicuspid valves are open and the semilunar values are closed. III. The first heart sound (lub) is associated with the closure of the tricuspid and biscuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves . IV. Neural signals through the sympathetic nerves can increases the rate of hearbeat, the strength of ventricular contraction and thereby the cardiac output.

First heart sound is associated with the closure of _______ valves whereas second heart sound is associated with the closure of _____valves.

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