Question

which muscle helps in pumping blood in the heart?

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Answer 1

Explanation:

myocardium. The myocardium does the main pumping work: It relaxes to fill with blood and then squeezes (contracts) to pump the blood.

Answer 2

Explanation

the four Chambers of your heart are made of a special type of muscle called myocardium. The myocardium does the main pumping work : It relaxes to fill with blood and then squeeze ( contracts ) to pump the blood.

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