Life processes - Control and Coordination

Parts of the nervous system

• Human nervous system divided into- central nervous system (CNS) and peripheral nervous system (PNS)
• CNS consists of the brain and spinal cord 
• PNS consists of the nerves that connects the CNS to different parts of the body
• The Brain, spinal cord, and nerves are the important parts of the nervous system

Brain

• The brain is enclosed in a bony box called the cranium and spinal cord is protected by vertebral column.
• The brain and spinal cord are externally covered by protective covering called meninges.
•  It is made up of three layers namely duramater (outer layer), arachnoid (middle layer), piamater (inner layer).
•  The space between meninges is filled by a watery fluid called cerebro- spinal fluid (CSF).  

Human brain is classified into- forebrain, midbrain, and hindbrain. 

• Forebrain- It consists of cerebrum, thalamus, and hypothalamus.
• It has following functions:
  • It is the thinking part of the brain.
  • The forebrain has sensory regions that receive sensory impulses from various receptors.
  • It has motor regions…