What is a nerve compared to a neuron? Is it a collection of axons alone or does it include cell body too? I'm pretty confused of what actually the "nerve" is composed of. I had imagined that the nerve is actually having a no of neurons synapsing together but I guess it's not so.. Pls do make a clear demarcation between a neuron, nerve, nerve fibre, ganglia, nuclei

  • $\begingroup$ @novo I vote to close the question too $\endgroup$ – Sonic Splasher Feb 21 '19 at 14:38

This is a rather broad question, but the categorization is as follows:

  • A neuron is a cell of the nervous system, its role is the transmission of electric signals.
  • A nerve is a bundle of axons, meaning that it contains neurons but only part of them.
  • A nerve fiber is another (and in my experience rarely used) term for an axon.
  • A ganglion is an aggregation of neuron cell bodies in the peripheral (i.e. autonomous and sensory) nervous systems.
  • A nucleus is an aggregation of neuron cell bodies in the central nervous system.

As you can deduce from the info above, a nerve is distinct from a neuron and does not include its cell body.

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