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Term:
Parent Terms Term With Siblings Child Terms
cellular component +     
cell +   
cell junction +   
cell part +   
extracellular region +   
extracellular region part +   
macromolecular complex +   
membrane +   
membrane part +   
membrane-enclosed lumen +   
mitochondrion-associated adherens complex 
nucleoid +   
organelle +   
organelle part +   
other organism +   
other organism part +   
supramolecular complex +   
symplast +  
synapse +   
The junction between a nerve fiber of one neuron and another neuron, muscle fiber or glial cell. As the nerve fiber approaches the synapse it enlarges into a specialized structure, the presynaptic nerve ending, which contains mitochondria and synaptic vesicles. At the tip of the nerve ending 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 nerve ending secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.
synapse part +   
viral occlusion body 
virion +   
virion part +   

Synonyms
Exact Synonyms: synaptic junction
Narrow Synonyms: mixed synapse
Related Synonyms: electrotonic synapse
Xref Analogs: NIF_Subcellular:sao914572699 ;   Wikipedia:Chemical_synapse
Only In Taxon: NCBITaxon:33208 ! Metazoa
Definition Sources: ISBN:0198506732

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