Neurone: Difference between revisions
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== Introduction == | == Introduction == | ||
Neurones are cells of the central nervous system, located within the grey matter, and responsible for all neurological functions of the brain<ref>Radiopedia [https://radiopaedia.org/articles/neurone Neurone] Available from;https://radiopaedia.org/articles/neurone (last accessed 16.12.2020)</ref>. | |||
Structure | |||
Neurones vary in morphology and size substantially, but all share a number of features : | |||
a cell body | |||
* nucleus | |||
* perikaryon: cytoplasm surrounding the nucleus | |||
axon | |||
* a single process of variable length (even over a metre) | |||
* generally the 'output' of the neurone | |||
* terminates in terminal buttons which release neurotransmitters | |||
dendrites | |||
* usually multiple branching processes | |||
* generally the 'input' of the neurone | |||
Generally, input from other neurones or sensory receptors received by dendrites may lead to an action potential within the cell body which then propagates down the axon, eventually resulting in the release of neurotransmitters from the terminal buttons. This, in turn, can affect other neurones or end organs. | |||
Types of neurones | |||
Three main morphological patterns of neurones are described, depending on the relationship of the cell body to the axon and dendrites 1. | |||
* multipolar | |||
* bipolar | |||
* pseudounipolar | |||
== Sub Heading 2 == | == Sub Heading 2 == | ||
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<references /> | <references /> | ||
[[Category:Neurology]] | |||
[[Category:Physiology]] | |||
[[Category:Anatomy]] | |||
[[Category:Nerves]] | |||
Revision as of 07:26, 16 December 2020
Original Editor - Lucinda hampton
Top Contributors - Lucinda hampton, Kim Jackson, Rucha Gadgil, Manisha Shrestha and Stacy Schiurring
Introduction[edit | edit source]
Neurones are cells of the central nervous system, located within the grey matter, and responsible for all neurological functions of the brain[1].
Structure
Neurones vary in morphology and size substantially, but all share a number of features :
a cell body
- nucleus
- perikaryon: cytoplasm surrounding the nucleus
axon
- a single process of variable length (even over a metre)
- generally the 'output' of the neurone
- terminates in terminal buttons which release neurotransmitters
dendrites
- usually multiple branching processes
- generally the 'input' of the neurone
Generally, input from other neurones or sensory receptors received by dendrites may lead to an action potential within the cell body which then propagates down the axon, eventually resulting in the release of neurotransmitters from the terminal buttons. This, in turn, can affect other neurones or end organs.
Types of neurones
Three main morphological patterns of neurones are described, depending on the relationship of the cell body to the axon and dendrites 1.
- multipolar
- bipolar
- pseudounipolar
Sub Heading 2[edit | edit source]
Sub Heading 3[edit | edit source]
Resources[edit | edit source]
- bulleted list
- x
or
- numbered list
- x
References[edit | edit source]
- ↑ Radiopedia Neurone Available from;https://radiopaedia.org/articles/neurone (last accessed 16.12.2020)
