The Nervous System (WJEC GCSE Biology: Combined Science)

• The human nervous system consists of:
  • The brain
  • The spinal cord
  • All the nerves of the body 
• The central nervous system (CNS) consists of:
  • The brain and spinal cord
• The nerves spread out from the central nervous system to all other regions of the body and importantly, to all the sense organs

The human nervous system diagram

The human nervous system consists of the central nervous system and the rest of the nerves in the body