Neuron

From The School of Biomedical Sciences Wiki
(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
A neuron is a [[Cell|cell]] that transmit electrical signals. There are 3 types of neurons: [[Motor neuron|motor]], [[Sensory neuron|sensory]] and [[Relay neuron|relay neuron]]. There are approximately 10<sup>11</sup> neuron cells in the central nervous system of an individual. A typical neuron consists of a cell body, [[Dendrites|dendrites]], [[Axon|axon]] and an [[Axon terminal|axon terminal]]&nbsp;<ref>Developmental Biology, 8th Edition, Scott F. Gilbert, Pg 394</ref>.<br>  
+
A neuron is a [[Cell|cell]] that transmit electrical signals. There are 3 types of neurons: [[Motor neuron|motor]], [[Sensory neuron|sensory]] and [[Relay neuron|relay neuron]]. There are approximately 10<sup>11</sup> neuron cells in the central nervous system of an individual. A typical neuron consists of a cell body, [[Dendrites|dendrites]], [[Axon|axon]] and an [[Axon terminal|axon terminal]]&nbsp;<ref>Developmental Biology, 8th Edition, Scott F. Gilbert, Pg 394</ref>.<br>
 +
 
 +
A neuron transmits electrical signals by [[Action_potentials|action potentials]]. These are triggered when the cell receives a chemical signal, such as the one from [[Acetylcholine|Acetylcholine]] binding to the post synaptic membrane, causing Sodium voltage-gated ion channels to open and Sodium to diffuse down its concentration gradient into the neuron causing [[Depolarisation|depolarisation]] (an electrical signal).
  
 
=== References  ===
 
=== References  ===
  
 
<references />
 
<references />

Revision as of 11:28, 10 November 2011

A neuron is a cell that transmit electrical signals. There are 3 types of neurons: motor, sensory and relay neuron. There are approximately 1011 neuron cells in the central nervous system of an individual. A typical neuron consists of a cell body, dendrites, axon and an axon terminal [1].

A neuron transmits electrical signals by action potentials. These are triggered when the cell receives a chemical signal, such as the one from Acetylcholine binding to the post synaptic membrane, causing Sodium voltage-gated ion channels to open and Sodium to diffuse down its concentration gradient into the neuron causing depolarisation (an electrical signal).

References

  1. Developmental Biology, 8th Edition, Scott F. Gilbert, Pg 394
Personal tools
Namespaces
Variants
Actions
Navigation
Toolbox