← Chapter 12
Anatomy & Physiology · Chapter 12

The Synapse

Neurons do not quite touch. They talk across a tiny gap using chemical messengers. An electrical signal turns into a chemical one. Then it turns electrical again in the next cell. Step through the handoff.

The signal arrives

The synapsestep 1 of 5
📷 Reference image
A real labeled figure to compare with the interactive above.
Diagram of a chemical synapse between two neurons
The Synapse — Young, KA., Wise, JA., DeSaix, P., Kruse, DH., Poe, B., Johnson, E., Johnson, JE., Korol, O., Betts, JG., & Womble, M., CC BY 4.0 (via Wikimedia Commons)