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.

1 Answer

Answer :

a) Serotonin
The sources of serotonin are the brain stem, hypothalamus, and dorsal
horn of the spinal cord.

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