Norepinephrine Flashcards
1
Q
what is Norepinephrine
A
alpha-adrenergic agonist
2
Q
what is norepinephrine a precursor of?
A
epinephrine secreted by the adrenal medulla
3
Q
what is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus
A
Norepinephrine?
4
Q
how does NE act as a peripheral vasoconstrictor
A
by acting on both alpha1 and alpha1-adrenergic receptors
5
Q
what does the result of the activity of NE at the Beta-adrenergic receptors do?
A
inotropic stimulator of the heart and dilator of coronary arteries
