Which of these statements describes neuropeptides
A)They are sometimes cosecreted along with classical neurotransmitters.
B)They are synthesized in the cytosol of the axon terminal.
C)They act at the subsynaptic membrane of the postsynaptic neuron.
D)They usually alter the potential of postsynaptic cells by opening specific ion channels.

Question

Quizplus · Accepted Answer

Neuropeptides are a type of neurotransmitter that are sometimes cosecreted along with classical neurotransmitters. They are synthesized in the cell body, and then transported down the axon to the axon terminal. They act both at the postsynaptic membrane and in other regions of the nervous system, and their effects can be modulatory or excitatory/inhibitory depending on the receptor subtypes they activate. They usually do not directly alter the potential of postsynaptic cells by opening specific ion channels, but instead have longer-lasting and more complex effects on cellular function.

Which of These Statements Describes Neuropeptides