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

Question

Quizplus · Accepted Answer

Neuromodulators are secreted from neurons, but unlike neurotransmitters, they are dispersed widely in the brain and affect multiple neurons, rather than just adjacent synapses. They can be of peptide form, but not always, and can have both inhibitory and excitatory effects. They are typically secreted in smaller amounts than neurotransmitters.