synapse
The junction between an axon of one neuron and a dendrite of another neuron, a muscle fiber or a glial cell. As the axon approaches the synapse it enlarges into a specialized structure, the presynaptic terminal bouton, which contains mitochondria and synaptic vesicles. At the tip of the terminal bouton is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic terminal bouton secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.
Exact Synonyms
synaptic junction
Related Synonyms
electrotonic synapse
Narrow Synonyms
mixed synapse
class Information
has_obo_namespace
cellular_component
class Relations
Subclass of
Related from
results in assembly of
occurs in
has target end location
results in disassembly of
results in organization of
results in maintenance of
has participant
adjacent to