| http://www.w3.org/ns/prov#value | - SA node, autonomic nervous system ??? ??? ??? What do the autonomic nervous system of the heart include? cardiovascular control centers in the brain, neuroreceptors in the atria and aorta, hormones, and catecholamines such as epinephrine and norepinephrine. ??? ??? ??? Vessel walls consists of what 3 layers? the tunica intima (inner), tunica media (middle), tunica externa (outer) ??? ??? ??? blood
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