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1. How Biology Affects Behaviour

5. The Nervous System

The nervous system consists of

nervous system chart

 central nervous system (CNS),

  • made up of the brain and the spinal cord,

 peripheral nervous system (PNS),

  • the neurons that link the CNS to our skin, muscles, and glands.
  • Composed of autonomic  and somatic nervous system
Somatic 
  • controls skeletal muscles, skin, and sense organs.

Autonomic NS 

  • controls internal organs and glands
  • Sympathetic 
    • activates organs and glands
  • Parasympathetic 
    • calms body, recovery