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==Key Stage 3=====Meaning===A '''nerve cell''' is a [[Specialised Cell|specialised cell]] in [[Animal|animals]] which [[Transmit|transmits]] electrical [[Impulse (Biology)|impulses]] around the body. ===Adaptations of Nerve Cells===: '''Nerve Cells''' have an elongated shape to send electrical [[Impulse (Biology)|impulses]] more quickly.: '''Nerve Cells''' have branches called [[dendrite]]s to link up to other '''nerve cells'''. ===About Nerve Cells===: All [[nerve]]s in the body are made of '''nerve cells'''.: '''Nerve cells''' are specially [[Adaptation|adapted]] to send electrical signals quickly.: Many '''nerve cells''' grouped together make [[Nerve Tissue|nerve tissue]]. {| class="wikitable"|-|[[File:NerveCell.png|center|400px]]|} ==Key Stage 4=====Meaning===[[Neuron]]s are [[Specialised Cell|specialised cells]] in the [[Nervous System|nervous system]] which [[Transmit|transmits]] electrical [[Impulse (Biology)|impulses]] around the body. ===Adaptations of Neurons===: '''Neurons''' have an elongated [[axon]] to send electrical [[Impulse (Biology)|impulses]] more quickly.: '''Neurons''' have branches called [[dendrite]]s to link up to other '''neurons'''.: The [[axon]] of a [[neuron]] is covered in a [[Myelin Sheath|myelin sheath]] which acts as an [[Electrical Insulator|electrical insulator]] to maintain the strength of the [[Impulse (Biology)|impulse]] as it passes along the [[axon]]. {| class="wikitable"|-|[[File:NeuronDiagram.png|center|400px]]|-| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of a [[Motor Neuron|motor '''neuron''']].|} ===About Neurons===: '''Neurons''' join together to form [[nerve]]s.: The point where two '''neurons''' meet is called a [[synapse]].: At the [[synapse]] between two '''neurons''' the [[Impulse (Biology)|electrical impulse]] must be [[transmit]]ed across the gap.There are three different types of '''neuron''' you should know:*[[Sensory Neuron]]*[[Relay Neuron]]*[[Motor Neuron]] ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Nerve cells, page 14, GCSE Biology; The Revision Guide, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10095 ''Nerve cells, page 14, GCSE Combined Science; The Revision Guide, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Nerve cells, page 31, GCSE Biology, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Nerve cells, page 31, GCSE Combined Science Trilogy; Biology, CGP, AQA '']:[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Nerve cells, page 9, GCSE Combined Science Trilogy 1, Hodder, AQA '']:[https://www.amazon.co.uk/gp/product/1471851338/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851338&linkCode=as2&tag=nrjc-21&linkId=425855d5890466e47189e1c21b67a1ea ''Nerve cells, pages 8, 9, GCSE Biology, Hodder, AQA '']