The major arteries (pulmonary artery and aorta) which leave the heart have ____________ which prevent backward flow of blood into the ventricles.

Bicuspid valves

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Semilunar valves

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Mitral valves

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Tricuspid valves

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Solution

The correct option is B Semilunar valves
Semilunar valves:

The major arteries (pulmonary artery and aorta) which leave the heart have semilunar valves which prevent backward flow of blood into the ventricles.

They are the pulmonary and aortic semilunar valves.

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Similar questions

Q. Blood from the lungs enters the heart through the
(a) pulmonary artery
(b) pulmonary vein
(c) aorta
(d) vena cava

The blood vessel which carries oxygenated blood from the lungs to the heart is :
(a) main artery
(b) pulmonary artery
(c) main vein
(d) pulmonary vein

19. Contraction of right ventricle pumps blood into

a) Right auricle

b) Pulmonary artery

c) Pulmonary vein

d) Aorta

Q. Match the following chambers of the heart with the respective blood vessels:

	Column A		Column B
$1.$	Right atrium	$a .$	Pulmonary vein
$2.$	Left atrium	$b .$	Aorta
$3.$	Right ventricle	$c .$	Superior vena cava
$4.$	Left ventricle	$d .$	Pulmonary artery

The pulmonary artery carries______ blood from the right ventricle of the heart.

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The major arteries (pulmonary artery and aorta) which leave the heart have ____________ which prevent backward flow of blood into the ventricles.

The correct option is B Semilunar valvesSemilunar valves: The major arteries (pulmonary artery and aorta) which leave the heart have semilunar valves which prevent backward flow of blood into the ventricles. They are the pulmonary and aortic semilunar valves.

The correct option is B Semilunar valves
Semilunar valves:

The major arteries (pulmonary artery and aorta) which leave the heart have semilunar valves which prevent backward flow of blood into the ventricles.

They are the pulmonary and aortic semilunar valves.