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

A : Dub is a long and sharp sound. R : It is caused by closing of atrio ventricular valves.

A : Dub is a long and sharp sound. R : It is caused by closing of atrio ventricular valves.

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

DUP is a long and sharp sound .It is caused by

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.

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.

First heart sound results from a closure of semilunar valves.

The second heart sound (dub) is associated with the closure of