Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
The neuron's synapse refers to the small gap between two neurons where they communicate with each other. It is the site where neurotransmitters are released by one neuron and received by another.
A chemical substance released by a neuron into the synapse that transmits signals to other neurons. Example: Serotonin is a neurotransmitter involved in regulating mood.
Specialized proteins located on the surface of neurons that receive neurotransmitters, allowing them to transmit their signal. Example: Dopamine receptors bind dopamine molecules in order for them to have an effect.
Synaptic Vesicles: Small sacs within the presynaptic neuron that store and release neurotransmitters into the synapse. Example: Synaptic vesicles contain dopamine molecules waiting to be released during neural firing.