The nervous system consists of the brain, spinal cord, and peripheral nerves. It is the major regulatory system of the body. Functions of the nervous system include:

  • Sensory reception
  • Information processing, memory, learning
  • Control of voluntary and involuntary movement
  • Reflexive responses
  • Assists in maintaining homeostasis

This system includes the brain found in the head, the spinal cord in the neck and back, and the network of nerves spread throughout the body.

Figure 1: The nervous system.