The property that allows the heart to initiate each heartbeat itself is called __________________.
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Q77: About seventy percent of the ventricle filling
Q78: The relatively small size of the Purkinje
Q79: The right and left coronary arteries are
Q80: During ventricular contraction the semilunar valves close
Q81: The anterior part of each atrium is
Q83: The relaxation phase of a heart chamber
Q84: The connections shared by arteries that allow
Q85: Another name for the visceral layer of
Q86: In an aging heart,increased flexibility of the
Q87: _ innervation increases the rate and the
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