Give why the walls of
ventricles are thicker
are thicker than atria.
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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.
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Answer:
Because ventricles have to do more work as compare to atria. Ventricles pump blood into various organs and the pressure of blood flowing in them is more than that of atria.
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