Posted 15 September 2008 - 10:20 AM
In case anyone had trouble accessing the Wikipedia page here is the first part, as Norepinephrine has dule roles I imagine that explains some of the seemingly contradictory symptoms we experience including temperature & breathing issues!
Be Well !
Bobbie
"ALL THAT IS REQUIRED FOR EVIL TO PREVAIL IS FOR GOOD MEN TO DO NOTHING."
P.S. the bold in the following article is by me.
Norepinephrine (INN) (abbreviated norepi or NE) or noradrenaline (BAN) is a catecholamine with dual roles as a hormone and a neurotransmitter.
As a stress hormone, norepinephrine affects parts of the brain where attention and responding actions are controlled. Along with epinephrine, norepinephrine also underlies the fight-or-flight response, directly increasing heart rate, triggering the release of glucose from energy stores, and increasing blood flow to skeletal muscle.
However, when norepinephrine acts as a drug it will increase blood pressure by its prominent increasing effects on the vascular tone (due stimulation of alpha-Receptors). This increase in vascular resistance is triggering a compensatory reflex that overcomes its direct stimulatory effects on the heart. The reflex, called the baroreceptor reflex, results in a drop in heart rate called reflex bradycardia.
[color=#008040]Be Well !? [/color]
Bobbie
See you at : [url=http://www.cymbaltasurvivors.Com]www.cymbaltasurvivors.Com[/url]
[color=#008040]"ALL THAT IS REQUIRED FOR EVIL TO PREVAIL IS FOR GOOD MEN TO DO NOTHING."[/color]