10/11/2023 0 Comments Structure of neuron download![]() ![]() Myelin is formed by cells wrapping themselves around the nerve axon. Whilst neurones have many dendrites, most cells only have one axon.Įach axon is coated in myelin – a layer of insulating lipid. The axon is a long, thin structure down which action potentials (the nerve impulse) are conducted. They extend outwards, receiving input from the environment and from other neurones. ![]() The dendrites are elongated portions of the cell body. In the CNS, this is known as a nucleus, and in the PNS as a ganglion. In the nervous system, many neuronal cell bodies can group together to form a distinct structure. It is the site of protein synthesis, which occurs on small granules of rough endoplasmic reticulum called nissl substance. ![]() They all contain the same key structural components – the cell body, dendrites, the axon and the axon terminals. There are several different types of neurones found in the nervous system. ![]()
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