Neuromodulators
A) are usually amino acids.
B) directly elicit postsynaptic potentials.
C) are usually found in small vesicles in the axon terminal buttons.
D) diffuse widely to affect many neurons.
E) mostly involve presynaptic receptors

Question

Quizplus · Accepted Answer

Neuromodulators are chemicals that are released by neurons and diffuse widely to affect many neurons. They do not directly elicit postsynaptic potentials and are not usually found in small vesicles in the axon terminal buttons. They can involve both presynaptic and postsynaptic receptors, but their effects are not limited to presynaptic receptors. Additionally, neuromodulators can be amino acids, but they can also be peptides or other types of molecules.