The heart must be stimulated by the nervous system to contract.
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Q56: The cardiac output of an average human
Q57: Diastole refers to
A)relaxation.
B)contraction.
C)stimulation.
Q58: A heart rate below 60 beats per
Q59: When is the second sound of the
Q60: What type of receptors,found in the aorta
Q62: Endothelium,with its basement membrane,is found in the
A)tunica
Q63: Hypertension will cause ventricular contractions to become
Q64: Which of the following does NOT affect
Q65: Pain in the chest area caused by
Q66: Blockage of coronary arteries kills heart muscle.This
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