The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all of the nerves that branch out from the brain and spinal cord and extend to other parts of the body including muscles and organs.
What is the main difference between the CNS and PNS?
The CNS consists of the brain and spinal cord, while the PNS includes all other nervous system tissue. All sensory receptors, sensory neurons and motor neurons are part of the PNS.
How will you differentiate CNS and PNS in terms of their functions?
The Central Nervous System (CNS) includes the brain and spinal cord. The Peripheral Nervous System (PNS) connects the CNS to other parts of the body, and is composed of nerves (bundles of neurons). Not all animals have highly specialized nervous systems.
What is the relationship between CNS and PNS?
If the central nervous system is the command centre of the body, the peripheral nervous system (PNS) represents the front line. The PNS links the CNS to the body’s sense receptors, muscles, and glands.
What is the main function of peripheral nervous system?
The PNS has three basic functions: (1) conveying motor commands to all voluntary striated muscles in the body; (2) carrying sensory information about the external world and the body to the brain and spinal cord (except visual information: the optic nerves, which convey information from the retina to the brain, are in …
What is the function of CNS and PNS?
The CNS is the brain and spinal cord. The PNS is everything else. Functionally, the nervous system can be divided into those regions that are responsible for sensation, those that are responsible for integration, and those that are responsible for generating responses.
What are the 3 functions of the central nervous system?
The nervous system has three broad functions: sensory input, information processing, and motor output. In the PNS, sensory receptor neurons respond to physical stimuli in our environment, like touch or temperature, and send signals that inform the CNS of the state of the body and the external environment.
How do the central nervous system and the peripheral nervous system work together to control the body?
Synapses form between the neurons, allowing them to communicate to other neurons or other systems in the body. The general flow of information is that the peripheral nervous system (PNS) takes in information through sensory neurons, then sends it to the central nervous system (CNS) to be processed.
What are the 3 parts of the peripheral nervous system?
The peripheral nervous system is divided into the somatic nervous system, and the autonomic nervous system. The somatic nervous system is under voluntary control, and transmits signals from the brain to end organs such as muscles.
What is associated with the PNS but not the CNS?
Spinal nerves are considered part of the CNS. *Spinal nerves are outside of the spinal cord and are considered part of the PNS.
Where is the peripheral nervous system located?
The peripheral nervous system refers to the parts of the nervous system that are outside the central nervous system, that is, those outside the brain and spinal cord.
What are the four parts of the peripheral nervous system?
The PNS is divided into the somatic and autonomic nervous systems. The somatic system controls voluntary activities, whereas the autonomic system controls involuntary activities. The autonomic nervous system is further divided into sympathetic, parasympathetic, and enteric divisions.
What are the two types of peripheral nerves?
Three types of peripheral nerves can be found within the two main areas of the peripheral nervous system:
- Sensory: Connects the brain and spinal cord to your skin and allow you to feel pain and other sensations.
- Autonomic: Controls involuntary function (e.g., blood pressure, digestion, heart rate).
What are the two subdivisions of the peripheral nervous system?
The peripheral nervous system is further subdivided into an afferent (sensory) division and an efferent (motor) division. The afferent or sensory division transmits impulses from peripheral organs to the CNS.