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Get Answers to all your Questions
Q2. Compare the following:
(a) Central neural system (CNS) and Peripheral neural system (PNS)
Answers (2)
|
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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The nerve system has two different major parts : 1- central nervous system (CNS)
2- peripheral nervous system (PNS)
• The CNS includes the brain and the spinal cord and its sites of information processing and control whereas the PNS comprises of all the nerves of the body associated with CNS.
• All the body sensation and changes in our external environment are relayed from receptors and sense organs to thr CNS to be interpreted, whereas the PNS can be divided into two sub categories:- the sensory system and the motor system.
• In CNS the group of neurons are called nucleic, whereas in PNS the group of neurons are called ganglia.
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