Science, asked by ashutoshf9969, 1 year ago

32. 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) Inner lining of the heart

Answers

Answered by abhi1239

4

valves in heart is the answer

Answered by kendallgreensinsane

1

Answer:

Explanation:

Valves present in heart

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