Mitral valve prevents the backflow of blood from to _.

right atrium, right ventricle

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left atrium, left ventricle

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aorta, left ventricle

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left ventricle, left atrium

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Solution

The correct option is D left ventricle, left atrium
Mitral valve is also called a bicuspid valve and it is present between the left ventricle and left atrium. The flow of blood is always from atrium to ventricles. The backflow of blood is prevented by the valves present between the auricles and ventricles.

The valve present between the right atrium and right ventricle is called a tricuspid valve. Aorta carries the oxygenated blood from the left ventricle.

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Complete the following statements by filling in the blanks from the choices given in the bracket.
(a) The blood vessel that begins and ends in capillaries is the ... (hepatic artery. Hepatic portal vein, hepatic vein)
(b) A blood vessel which has a small lumen and thick walls is (capillary, lymphatic duct, artery, venule)
(c) the valve which prevents backflow of blood in the veins and lymph vessels... (mitral valve, tricuspid valve, semilunar valve).

Q. Complete the following passage:

Valves function to prevent backflow of blood and maintain a unidirectional circulation of blood within the body. The (i)__________ valve separates the right atrium from the right ventricle whereas the (ii)_____________ valve separates the left atrium and left ventricle. The (iii)___________ valve prevents the backflow of deoxygenated blood from the pulmonary artery into the right ventricle while the (iv)__________ valve prevents the backflow from aorta into the left ventricle.

What prevents the backflow of blood inside the heart during contraction ?
(a) thick muscular walls of ventricles
(b) valves
(c) thin walls of atria
(d) all of the above

Question 18
What prevents backflow of blood inside the heart during contraction?

(a) Valves in heart
(b) Thick muscular walls of ventricles
(c) Thin walls of atria
(d) All of the above

Q. The food is prevented from entering the by a flap-like valve.

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Valves in Heart

Standard XIII Biology

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Mitral valve prevents the backflow of blood from ____________ to _____________.

Mitral valve prevents the backflow of blood from to _.