Question

Q. The back flow of blood during the pumping of blood by heart is prevented by:

a) Walls of ventricles

b) Walls of atrium

c) Valves in heart

d) Walls between atria and ventricles

WHAT IS THE CORRECT ANSWER IN THIS 4 OPTION.
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Answer 1

Answer:

Answer=(c) Valves in heart.

Explanation:

Veins contain a series of one-way valves. As the vein is squeezed, it pushes blood through the valves, which then close to prevent backflow.

Hope this helps you.

Answer 2

Answer:

c) Valves in heart

Explanation:

As the heart pumps blood, a series of valves open and close tightly. These valves ensure that blood flows in only one direction, preventing backflow. The tricuspid valve is situated between the right atrium and right ventricle. The pulmonary valve is between the right ventricle and the pulmonary artery.