See below: •noradrenaline is the main neurotransmitter of the sympathetic nerves in the cardiovascular system. •adrenaline is the main hormone secreted by the adrenal medulla. •the sympathetic noradrenergic system plays major roles in tonic and reflexive changes in cardiovascular tone. •adrenaline is a major determinant of responses to metabolic or global challenges to homeostasis.
Answered 7/30/2012
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