What is peripheral nervous system describe?

The peripheral nervous system consists of the nerves that branch out from the brain and spinal cord. These nerves form the communication network between the CNS and the body parts. The autonomic nervous system consists of nerves that connect the CNS to the visceral organs such as the heart, stomach, and intestines.

What is the main idea of the peripheral nervous system?

The peripheral nervous system (PNS) is the division of the nervous system containing all the nerves that lie outside of the central nervous system (CNS). The primary role of the PNS is to connect the CNS to the organs, limbs, and skin.

What is the peripheral nervous system and its parts?

Overview. The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions.

Are eyes part of the peripheral nervous system?

Peripheral nervous system: The portion of the nervous system that is outside the brain and spinal cord. Abbreviated PNS. The nerves in the PNS connect the central nervous system (CNS) to sensory organs, such as the eye and ear, and to other organs of the body, muscles, blood vessels, and glands.

What are the four functions of the 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’s the difference between central and peripheral nervous system?

The central nervous system comprises the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.

What are the two types of peripheral nerves?

The peripheral nervous system is divided into two main parts:

• Autonomic nervous system (ANS): Controls involuntary bodily functions and regulates glands.
• Somatic nervous system (SNS): Controls muscle movement and relays information from ears, eyes and skin to the central nervous system.

What connects the peripheral nervous system to the brain?

Cranial – connects the brain with the periphery or spinal – connects the spinal cord with the periphery.

What is the difference between central and peripheral nervous system?

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What are the divisions of the peripheral nervous system?

There are two main types; spinal nerves and cranial nerves. Functionally, the PNS can be divided into the autonomic and somatic nervous systems. Both of these can be further subdivided; the former into sympathetic and parasympathetic arms and the latter into sensory and motor divisions. It might sound complicated, but it’s not.

How does the peripheral nervous system transmit motor and sensory information?

Transmits motor and sensory information between the central nervous system and peripheral body tissues. The workhorse of the peripheral nervous system are the peripheral nerves. Each nerve consists of a bundle of many nerve fibers (axons) and their connective tissue coverings.

Where is the PNS located in the nervous system?

Copyright © 2010 Pearson Education, Inc. Central nervous system (CNS) Peripheral nervous system (PNS) Sensory (afferent) Motor (efferent) division division Somatic nervous system Autonomic nervous system (ANS) Sympathetic division Parasympathetic division Figure 13.1 Place of the PNS in the structural organization of the nervous system.