Presynaptic neurone: Difference between revisions
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The presynaptic neurone is the neurone that releases [[Neurotransmitter|neurotransmitter]], across the synapse, to the [[Postsynaptic neurone|post synaptic neurone]]. | |||
< | When an [[Action potential|action potential arrives]] at the [[Axon terminal|axon terminal]] of the presynaptic membrane, [[Calcium_ion_channel|Ca<sup>2+</sup> ion channels]] open, allowing the ions to move into the cell down their [[Concentration Gradient|concentration gradient]]. This, in turn, causes the neurotransmitter containing [[Vesicles|vesicles]] to translocate and fuse to the [[Presynaptic membrane|presynaptic membrane]]. The neurotransmitter diffuses across the synapse and starts a new action potential in the postsynaptic neurone<ref>Purves D, Augustine GJ, Fitzpatrick D, et al., editors. Neuroscience. 2nd edition. Sunderland (MA): Sinauer Associates; 2001. Excitatory and Inhibitory Postsynaptic Potentials. Available from: https://www.ncbi.nlm.nih.gov/books/NBK11117/accessed 17/11/17</ref>. | ||
=== Reference === | |||
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Revision as of 09:59, 18 November 2017
The presynaptic neurone is the neurone that releases neurotransmitter, across the synapse, to the post synaptic neurone.
When an action potential arrives at the axon terminal of the presynaptic membrane, Ca2+ ion channels open, allowing the ions to move into the cell down their concentration gradient. This, in turn, causes the neurotransmitter containing vesicles to translocate and fuse to the presynaptic membrane. The neurotransmitter diffuses across the synapse and starts a new action potential in the postsynaptic neurone[1].
Reference
- ↑ Purves D, Augustine GJ, Fitzpatrick D, et al., editors. Neuroscience. 2nd edition. Sunderland (MA): Sinauer Associates; 2001. Excitatory and Inhibitory Postsynaptic Potentials. Available from: https://www.ncbi.nlm.nih.gov/books/NBK11117/accessed 17/11/17