Q103: Pacemaker activity by the Purkinje fibers is
Q106: Parasympathetic stimulation slows the rate of depolarization
Q112: A pacemaker potential depends on the increased
Q116: Normally, the stroke volume of the right
Q120: Contraction of the spirally arranged cardiac muscle
Q129: Sympathetic stimulation of the heart increases calcium
Q131: Sympathetic stimulation increases the heart rate.
Q132: One important function of the intrinsic control
Q137: The first heart sound signals the onset
Q138: Parasympathetic stimulation of the AV node increases
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