The first heart sound is :- | vedclass

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

Question

(B) The heart produces two main sounds during each cardiac cycle, which can be heard through a stethoscope.$1$. The first heart sound is known as '$Lu

Vedclass · Accepted Answer

'Lubb' sound produced at the beginning of ventricular systole

Vedclass · Answer

(B) The heart produces two main sounds during each cardiac cycle, which can be heard through a stethoscope.$1$. The first heart sound is known as '$Lubb$'. It 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 is known as '$Dub$'. It is produced by the closure of the semilunar valves at the end of ventricular systole.Therefore, the first heart sound is the '$Lubb$' sound produced at the beginning of ventricular systole.

The first heart sound is $:-$

Similar Questions

Which organ is known as the reservoir of red blood cells (RBCs)?

The pacemaker of the heart is known as ........

When is the '$DUB$' sound heard during the cardiac cycle?

The typical 'Lubb-Dup' sounds heard in the heartbeat of a healthy person are due to:

The "Bundle of His" is considered to be a part of which of the following organs?

Vedclass Test Series

Exam Paper Generator

Online Exam Module