What prevent backflow of blood inside the heart during contraction ?
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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.
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A bus starts frim rest and picks up a velocity of 60 m/s in 30 seconds.Calculate the uniform acceleration of the bus in m/s^2
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