Question

Q why do the walls of the heart differ in thickness?
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Answer 1

HEY MATE HERE IS YOUR ANSWER

Differences in thickness of the heart chamber walls are due to variations in the amount of myocardium present, which reflects the amount of force each chamber is required to generate. The right atrium receives deoxygenated blood from systemic veins; the left atrium receives oxygenated blood from the pulmonary veins.

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