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
- 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…
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