Neurons differ from other cells in that they communicate with each other via specialized extensions called:

The axon is a long, very thin tube leading away from the cell body. The axon has appendages called:

The _____ is also known as the "little brain."

The _________ system consists of a number of structures surrounding the brain stem and is involved in motivation, emotion, and memory.

The _______ system restores the body to a state of rest and relaxation

The __________ system creates an excited state, as in “fight or flight” situations.

_______ plays a role in sleep, the regulation of mood; and control of eating; the regulation of pain; and control of dreaming.

_______ is active when we sleep and is associated with calming effects.