Read the following and select the correct combination.

Lub sound - Closure of semi lunar valves - Atrial diastole

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Dub sound - Closure of tricuspid valve - Ventricular systole

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Lub sound - Closure of Tricuspid, bicuspid valve - Ventricular systole

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Dub sound - Closure of semi lunar valves - Ventricular systole

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Solution

The correct option is C Lub sound - Closure of Tricuspid, bicuspid valve - Ventricular systole
The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves (ventricular systole) whereas the second heart sound (dub) is associated with the closure of the semilunar valves (ventricular diastole).

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Similar questions

Q. Which of the following events does not take place during a ventricular systole
i. Due to the ventricular systole, ventricular pressure decreases.
ii. During the end of ventricular systole the semilunar valves open up.
iii. During the start of the ventricular systole the bicuspid and tricuspid valves close
iv. Due to the closure of the atrio-ventricular valves, dup sound is produced.

Q. Read the following statements and select the correct option.
A. Damage to chordae tendinae of semilunar valves in aorta causes back flow of blood in left ventricle.
B. Closure of atrio-ventricular valves during ventricular systole generates first heart sound.

Q. Read the following statements and select the correct option.
A. Damage to chordae tending of semilunar valves in aorta causes back flow of blood in left ventricle.
B. Closure of atrio-ventricular valves during ventricular systole generates first heart sound

The second heart sound (dubb) is associated with the closure of ?
(a) tricuspid valve
(b) semilunar valve
(c) bicuspid valve
(d) tricuspid and bicuspid valve

Heart sounds are produced due to
(a) Closure of tricuspid and bicuspid valves
(b) Rushing of blood through valves producing turbulence
(c) Closure of atrioventricular and semilunar valves
(d) Entry of blood into auricles

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