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The left ventricle discharges blood into the ....., from which all systemic arteries of the body diverge to supply the body tissues.
The right atrioventricular valve, or .........., prevents backflow into the right atrium when the right ventricle is contracting.
The heart serves as a double pump. The (right or left) side serves as the pulmonary circulation pump, shunting carbon dioxide-rich blood to the lungs.
Two microscopic features of cardiac cells that help distinguish them from other types of muscle cells are branching and?
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