Chemicals that are released into the brain and subsequently stimulate receptor molecules on thousands of neurons, some located a long distance away, are called
A) enzymes.
B) ions.
C) transmitter substances.
D) neuromodulators.
E) neurotransmitters.

Question

Quizplus · Accepted Answer

Neuromodulators are chemicals that affect a large number of neurons, often at a distance, by modulating the activity of neurotransmitters and receptors.

Chemicals That Are Released into the Brain and Subsequently Stimulate