Q2.    Compare the following:

                (a) Central neural system (CNS) and Peripheral neural system (PNS)

Answers (1)
P Priyanka Kumari

Central Neural System (CNS)

Peripheral Neural System (PNS)

1. CNS is made of the brain and the spinal cord.  1. PNS consists of cranial nerves and spinal nerves.
2. Brain is protected by the skull and the spinal cord by the vertebral column.  2. There are no protective structures for PNS.
3. CNS does not have any subdivisions.  3. PNS is divided into somatic nervous system and autonomic nervous system.
4. CNS processes the information and controls the response to impulses.  4. Nerves of PNS carry impulses to the CNS and responses from the CNS to different organs of the body.
5. Group of neurons in CNS is called nuclei.  5. Group of neurons in PNS is called ganglia.
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