Mammalian Nervous System (Cambridge International IGCSE Science)

Structure & Role of the Mammalian Nervous System

• The human nervous system consists of the:

  • central nervous system (CNS) - the brain and the spinal cord
  • peripheral nervous system (PNS) - all of the nerves in the body

• It allows us to

  • Make sense of our surroundings and respond to them
  • Coordinate and regulate body functions

• Information is sent through the nervous system as nerve impulses - electrical signals that pass along nerve cells known as neurones

• A bundle of neurones is known as a nerve

The human nervous system