Biology, asked by mohammedaamer399, 7 months ago

explain systolic phase

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Answered by Anonymous

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Systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk.

Answered by bookworm1235

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Thanks for free points

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