Neuromodulators are
A) rarely of a peptide form.
B) secreted from neurons, but dispersed widely in the brain.
C) inevitably inhibitory.
D) secreted from a neuron and only affect an adjacent neuron.
E) typically secreted in very small amounts compared to neurotransmitters.

Question

Quizplus · Accepted Answer

Neuromodulators are secreted from neurons but can affect many different neurons in various regions of the brain, as they are released into the extracellular fluid and diffuse widely. They can be either inhibitory or excitatory and can be in the form of peptides or other chemical types. Compared to neurotransmitters, neuromodulators are typically secreted in larger amounts.

Neuromodulators Are