When do the 'lub' and 'dub' sounds occur duri | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The cardiac cycle involves two primary heart sounds:$1$. The first heart sound,'$lub$',is produced by the closure of the atrioventricular $(AV)$ v

Vedclass · Accepted Answer

Closure of $AV$ valves $\quad$ Closure of semilunar valves

Vedclass · Answer

(A) The cardiac cycle involves two primary heart sounds:$1$. The first heart sound,'$lub$',is produced by the closure of the atrioventricular $(AV)$ valves (tricuspid and bicuspid valves) at the beginning of ventricular systole.$2$. The second heart sound,'$dub$',is produced by the closure of the semilunar valves at the beginning of ventricular diastole.Therefore,the correct sequence is: $Lub$ = Closure of $AV$ valves,$Dub$ = Closure of semilunar valves.

When do the 'lub' and 'dub' sounds occur during the cardiac cycle?
Lub $\quad$ $\quad$ $\quad$ Dub

Similar Questions

In cardiac muscles,the number of mitochondria is:

What is the cardiac output of blood?

Identify the correct location of the valves in the human heart.

Cardiac muscles are .....

Where does the bundle of His originate?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

When do the 'lub' and 'dub' sounds occur during the cardiac cycle?Lub $\quad$ $\quad$ $\quad$ Dub