nervous system

• Components of the human nervous system

  • Central nervous system (CNS)
  • Peripheral nervous system (PNS)
• Central nervous system (CNS)

  The brain and the spinal cord
• Peripheral nervous system (PNS)

  All the nerves in the body
• The nervous system allows us to make sense of our surroundings and respond to them and to coordinate and regulate body functions
• Information is sent through the nervous system as nerve impulses
• Nerve impulses

  Electrical signals that pass along nerve cells known as neurons
• A bundle of neurons

  A nerve
• Neurons coordinate the activities of sensory receptors, decision making centers in the CNS and effectors such as muscles and glands