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
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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.
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answer is valves in heart
Explanation:
the backflow of blood inside heart
is kown as regurgitation
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