Systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle. Systole causes the ejection of blood into the aorta and pulmonary trunk
Systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle. Systole causes the ejection of blood into the aorta and pulmonary trunk
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