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Dup sound is produced during closure of...

Dup sound is produced during closure of

A

semilunar valves

B

bicuspid valve

C

tricuspid valve

D

Both (b) and (c )

Text Solution

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The correct Answer is:
A
(a) The period between the end of one heartbeat to the end of next heartbeat is called cardiac cycle is formed of three phases.
Atrial systole, ventricular systole and join distole During ventricular systole closing of Auriculo ventricular (AV) valve at the start of ventricular systole produces first heart sound called ' lubb' of systolic acid .
During joint diastole rapid closure of semilunar valves at the beginning of ventricular diastole produces the second heart sound called 'dup'.
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