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Regulate arterioles (Vasoconstriction (Norepinephrine (sympathetic…
Regulate arterioles
Vasoconstriction
Norepinephrine
sympathetic posganglionic neurons
Alpha 1 receptors
cytosolic Ca
Epinephrine
Alpha 1 receptors
adrenal medulla
Ang II
Alpha 1 receptors
ADH/ vasopressine
V1 receptor
Vasodilation
< sympathetic
< Norepinephrine release
< cytosolic calcium
alpha 1 receptors block
Epinephrine stimulates Beta 2 receptors.
Oxid Nitric from endotelium, activates guanilyl cyclase, so > GMP
CO2
To maintain MAP