Biology, asked by baljotsinghranusingh, 11 months ago

What prevent backflow of blood inside the heart during concentration?
A. Valves of heart
B. Thick muscular of ventricle
C. Valves Wall of atrium
D. All the above

Answers

Answered by puru754

3

A. Valves of heart is the correct answer

Answered by anshumansingh9892

0

Answer:

valve wall of atrium is answer

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