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

Open in App

Solution

Valves prevent the back flow of blood inside the heart. So, the correct choice is (b).

Suggest Corrections

Similar questions

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

Valves prevent backflow of blood inside the heart during contraction.

Q. What prevents backflow of blood inside the heart during contraction?

P in the heart have thicker muscular walls than Q does. Also, R ensures that blood does not flow back when the atria or ventricles contract.
Identify P, Q and R.

Question 21
Choose the correct statement that describes arteries.

(a) They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart.
(b) They have thin walls with valves inside, blood flows under low pressure and carries blood away from the heart to various organs of the body.
(c) They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body.
(d) They have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body.

Join BYJU'S Learning Program

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

Valves prevent the back flow of blood inside the heart. So, the correct choice is (b).

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