Human Nervous System
1. The human nervous system is divided into
(a) Central nervous system (or CNS) – consists of the brain and spinal cord.
(b) Peripheral nervous system (or PNS) – consists of the spinal nerves and cranial nerves.
Chart showing the classification of human nervous system
Human nervous system
Central Nervous System
- The central nervous system is the control centre of the body.
- This system consists of the brain and the spinal cord.
- The brain controls all voluntary actions of the body like walking and talking.
- The spinal cord controls the reflex actions such as sneezing.
Peripheral nervous system
- The peripheral nervous system consists of all the nerves which connect the central
- nervous system to the receptor and effector located at other parts of the body.
- The function of the peripheral nervous system is to transmit impulses from the sensory
- organ through central nervous system to the effector to respond accordingly.