Q47: Bicuspid or mitral valves exist between the
Q48: The heart is essentially in the middle
Q49: Closure of the aortic valve produces a
Q50: Atrial excitation and contraction should be complete
Q51: The main effect of parasympathetic stimulation on
Q53: When the body is at rest,one complete
Q54: A diastolic murmur occurs between the second
Q55: Parasympathetic stimulation and epinephrine enhance the heart's
Q56: The atrioventricular node is the normal pacemaker
Q57: Atrial fibrillation is characterized by slow,irregular,uncoordinated depolarizations
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