Neuron (Motor), Spinal Cord, 50X at 35mm. Shows: cell body, nucleus, dendrites (several), axon (single, long nerve fiber), and neuroglial cells (black spots). [Getty Images]

Neuron (Motor), Spinal Cord, 50X at 35mm. Shows: cell body, nucleus, dendrites (several), axon (single, long nerve fiber), and neuroglial cells (black spots).

Photolibrary Ed Reschke