Bio Question

[s13]

Can somebody please explain to me the difference between Epinephrine and Norepinephrine?

 

[MALA]

http://en.wikipedia.org/wiki/Epinephrine

Try here.

 

[OoShimmeroO]

I remember I use to have the same question myself. I can try answering it using my endocrinology book.

Epi acts primarily as a hormone while norepi serves mainly as a nuerotransmitter (but sometimes it does serve as a hormone).

Most of us have heard of the fight-or-flight response where stress causes us to release adrenaline(epinephrine). It also causes us to release norepinephrine. In humans, norepi and epi are released at a ratio of 1:4

Epi and norepi have similar physiological effects, but differ in several important respects. For instance, epi elevates heart rate and affects metabloilsm more than noreipi. In contrast, norepi is a more potent vasoconstricter than epi.

Hope it kinda helped

 

[s13]

yea it did. thankyou

 

[OoShimmeroO]

ur welcome 🙂