Question

List the advantages of having a nervous system. Also give differences between CNS and PNS.

Answer 1

The advantages of having a nervous system are:-

• Controls and coordinates various functions of the body through electrical impulses.
• Enables us to remember, to think and to reason out.
• Keep us informed about the outside world through the sense organs.
• It controls and harmonies all voluntary muscular activities.
• Regulates involuntary activities such as breathing or the beating of the heart, and more.

Central nervous system	Peripheral nervous system
Includes the brain and the spinal cord	Includes the nerves that emerge from and enter into the brain and spinal cord.
They receive data and feedback from the sensory organs and from nerves throughout the body, process the information, and send commands back out.	Channel for the relay of sensory and motor impulses between the central nervous system on one hand and the body surface, skeletal muscles, and internal organs on the other hand.