Posted: August 16th, 2017

Of the following neurotransmitters, which demonstrates inhibitory action, helps control mood and sleep, and inhibits pain pathways?

Of the following neurotransmitters, which demonstrates inhibitory action, helps control mood and sleep, and inhibits pain pathways?
a) Serotonin
The sources of serotonin are the brain stem, hypothalamus, and dorsal horn of the spinal cord.
b) Enkephalin
Enkephalin is excitatory and associated with pleasurable sensations.
c) Norepinephrine
Norepinephrine is usually excitatory and affects mood and overall activity.
d) Acetylcholine
Acetylcholine is usually excitatory, but the parasympathetic effects are sometimes inhibitory.