?

Neuroscience

Free Version

Upgrade subject to access all content

Moderate

Neurotransmitters: Two Types

NEURO-Z683I3

The molecules that function as neurotransmitters at chemical synapses can be classified into small-molecule neurotransmitters and neuropeptides. Small-molecule neurotransmitters generally mediate rapid synaptic actions, and neuropeptides tend to modulate slower, ongoing actions.

Based on your understanding of these two types of chemical neurotransmitters, which one of the following statements is CORRECT?

A

Small-molecule neurotransmitters are synthesized in the cell body of a neuron.

B

Neuropeptides are synthesized by ribosomes.

C

Neuropeptides are stored in small clear vesicles.

D

Small-molecule neurotransmitters are transported in vesicles along an axon and down to the synaptic terminal for secretion.