presynaptic cell


presynaptic cell
In a chemical synapse, the cell that releases neurotransmitter that will stimulate the postsynaptic cell In an electrically-synapsed system, the cell that has the first action potential, but since synapses are rectifying, one of the two cells involved is always presynaptic.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • presynaptic — Pertaining to the area on the proximal side of a synaptic cleft. * * * pre·syn·ap·tic sə nap tik adj relating to, occurring in, or being part of a nerve cell by which a wave of excitation is conveyed to a synapse <presynaptic terminals>… …   Medical dictionary

  • presynaptic — [ˌpri:sɪ naptɪk] adjective Physiology denoting a nerve cell that releases a transmitter substance into a synapse during transmission of an impulse. Derivatives presynaptically adverb …   English new terms dictionary

  • postsynaptic cell — In a chemical synapse, the cell that receives a signal (binds neurotransmitter) from the presynaptic cell and responds with depolarization. In an electrical synapse, the postsynaptic cell would just be downstream, but since many electrical… …   Dictionary of molecular biology

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