Learn about the structure and different regions of the brain

Learn about the structure and different regions of the brain. (Image: YouTube / CC BY - https://www.youtube.com/watch?v=HgmQe-HXP9w).

In humans and other vertebrates, the nervous system is comprised of two main parts: the central nervous system and the peripheral nervous system.

Central Nervous System

The central nervous system (CNS) contains the brain and spinal cord, and forms the majority of the nervous system. The brain is protected by the thick bones of the skull, and the spinal cord is protected by the vertebrae.

Brain

Peripheral Nervous System

The peripheral nervous system (PNS) connects the CNS to limbs and organs. The PNS is divided into the:

  • Autonomic nervous system
  • Somatic nervous system
  • Enteric nervous system