where does the pushing force come from to push the blood out of the heart
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3
Answer:
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Explanation:
acc. to this it is ventricles
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8
Answer:
The blood first enters the heart into the right atrium. Blood passes from the right atrium through the tricuspid valve and into the right ventricle. When the right ventricle contracts, the muscular force pushes blood through the pulmonary semilunar valve into the pulmonary artery.
Explanation:
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