Serotonin
A)acts as a neuromodulator.
B)is a catecholamine neurotransmitter.
C)is a neuropeptide.
D)has an inhibitory effect on pathways that are involved in the control of muscles.
E)has an excitatory effect on pathways that mediate sensations.

Question

Serotonin
A)acts as a neuromodulator.
B)is a catecholamine neurotransmitter.
C)is a neuropeptide.
D)has an inhibitory effect on pathways that are involved in the control of muscles.
E)has an excitatory effect on pathways that mediate sensations.

Quizplus · Accepted Answer

Serotonin acts as a neuromodulator, which means it regulates the activity of other neurotransmitters and neural circuits in the brain. It is not a catecholamine neurotransmitter or a neuropeptide. While it does have some inhibitory effects on certain pathways, it also has excitatory effects on other pathways, so neither D nor E are accurate statements.