The CNS (central nervous system) comprises the brain and spinal cord. These are not a part of the peripheral nervous system.
What are the components of the nervous system?
- There are two components in the nervous system:
- The central nervous system (CNS)
- The peripheral nervous system (PNS)
- The brain and spinal cord are components of the central nervous system, which carries and processes sensory signals before directing motor signals to the effector organs to coordinate biological functions.
- The parts of PNS include the somatic nervous system and the autonomic nervous system. It comprises sensory receptors, sensory neurons, and motor neurons altogether.
What is the nature of the CNS and PNS?
- The CNS is made up of sensory and motor nerves that are to and fro connected to the brain and spinal cord, respectively.
- PNS is the massive network of spinal and cranial nerves that connects to the brain, spinal cord, and muscles at one end. It is composed of dorsal and ventral root nerve cell heads.
The components of CNS include the brain and spinal cord linked with the peripheral nervous system through a network of spinal and cranial nerves.
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