Author: Nathan Lampson

This lesson will describe neurons communicate when sending a signal through the nervous system.

See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

28 Sophia partners guarantee credit transfer.

264 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 22 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Terms to Know

A bacterial toxin that is often used to smooth facial wrinkles by stopping the release of the neurotransmitter acetylcholine.

Exciting Signals

Signals that trigger an action potential to happen.

Inhibiting Signals

Neurotransmitters that inhibit or prevent action potentials.


The chemical form of a signal that is sent between neurons and muscle cells, gland cells or other neurons.

Postsynaptic Cell

The cell at a synapse to which the neurotransmitter binds.

Presynaptic Cell

The cell at a synapse that stores a neurotransmitter for release.


The gap between a neuron and a gland cell, muscle cell and another neuron.