Question

10. Which of the following prevents the back flow of blood?
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Answer 1

Answer:

Valves maintain direction of blood flow

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.

Answer 2

Answer:

valves prevents the back flow of blood