Adaptations of neurons

Nerve cells are called neurons. They are adapted to carry electrical impulses from one place to another.

A bundle of neurons is called a nerve.

An image of the inside of a nerve
  • a long fibre (axon) so they can carry messages up and down the body over long distances
  • in a stimulated neuron, an electrical nerve impulse passes along the axon
  • the axon is insulated by a fatty (myelin) sheath. The fatty sheath increases the speed of the nerve impulses along the neuron
  • at each end of the neuron are tiny branches (dendrons), which branch even further into dendrites. The dendrites receive incoming nerve impulses from other neurons.
Diagram of a motor neuroneA motor neuron