Chordae tendineae

Increase area of ventricle

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Prevent pushing of auriculoventricular valve into auricles

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Keep auricles stretched

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Direct flow of blood into truncus arteriosus

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Solution

The correct option is B Prevent pushing of auriculoventricular valve into auricles
The two auricles open into a single ventricle chamber by an auriculo-ventricular aperture which is guarded by two pairs of auriculoventricular valves. The valves are provided with chordae tendinae. The chordae tendinae pull the flaps back to close the opening and thus prevent the valves from the backward flow of blood into the auricles.
So the correct answer is 'Prevent pushing of the auriculoventricular valve into auricles'.

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Similar questions

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

Q. Opening of auricles into ventricles are guarded by valves.

Q. Give reasons for the following
Opening of auricles into ventricles are guarded by valves.

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

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