Question

What prevents backflow of blood inside the heart during contraction?​

Answer 1

Answer:

as the heart is pumping blood a series of valves closely tightly flow in only one direction prevent Li backflow

Explanation:

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Answer 2

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The tricuspid valve and the mitral valve are known as 'atrioventricular' valves as they are situated between the atria and ventricles on both sides of the heart. The aortic valve sits between the left ventricle and the aorta and prevents backflow of blood into the left ventricle after it contracts.