Question

why the muscular walls of ventricles are thicker then the walls of atria​

Answer 1

Answer:

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Explanation:

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Answer 2

Explanation:

Their muscular walls are thicker than the atria because they have to pump blood out of the heart. ... This is because the left ventricle has to pump blood at a higher pressure so that it reaches all areas of the body (including the fingers and toes) but the right side only has to pump blood to the lungs.