Chapter 18

NCERT
Class 11
Biology
Solutions
What is the difference between the CNS and PNS?

Question:

What is the difference between the CNS and PNS?

Answer:

The nervous system is divided into two main parts: Central and Peripheral.

Feature CNS (Central Nervous System) PNS (Peripheral Nervous System)
Components Brain + Spinal cord Nerves outside the CNS
Function Processing and decision-making Transmitting messages to/from CNS
Control Mostly involuntary & voluntary Mostly voluntary & reflex actions
Example Thinking, reflex coordination Moving arms, feeling touch

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