Share this entry

Share this page

presynaptic

Line breaks: pre|synap¦tic
Pronunciation: /ˌpriːsɪˈnaptɪk
 
/

Definition of presynaptic in English:

adjective

Physiology
Relating to or denoting a nerve cell that releases a transmitter substance into a synapse during transmission of an impulse: the presynaptic terminal
More example sentences
  • Instead, transmission is accomplished by the release of a chemical neurotransmitter substance from the presynaptic fibre.
  • The toxin irreversibly binds to presynaptic cholinergic receptors at motor nerve terminals and is subsequently internalized.
  • The authors proposed a mechanism of action whereby the calcium channel blocker inhibited the presynaptic release of neurotransmitters.

Derivatives

presynaptically

1
adverb
Example sentences
  • Cocaine blocks the reuptake of catecholamines presynaptically.
  • Glutamate is released presynaptically and binds to a postsynaptic receptor gating a cation-selective channel, thus depolarizing the post-synaptic cell.
  • We find that the occurrence of glia postsynaptically is strikingly higher than presynaptically, in both types of synapses.

Definition of presynaptic in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day Noel
Pronunciation: nōˈel
noun
Christmas…