Answer:
It increases the heart rate
Step-by-step explanation:
Norepinephrine or noradrenalin is a neurontransmitter that controls many body functions as part of the sympathetic nervous system. This means that its role is to increase body movement and to prepare organism for "fight and flight" reactions. Its functions are:
- alertness, arousal and attention (in the brain)
- increase of the heart rate and blood pressure,
- release of glucose from energy stores,
- inhibition of voiding of the bladder and gastrointestinal motility etc.
Norepinephrine achieves its function by binding to its cell membrane receptors-alpha and beta adrenergic G protein-coupled receptors.