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.
Is spinal cord CNS or PNS?
The nervous system is comprised of two major parts, or subdivisions, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS includes the brain and spinal cord.
What are the two parts of peripheral nervous system?
The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system.
What is the main function of the peripheral nervous system?
Peripheral nerves reside outside your brain and spinal cord. They relay information between your brain and the rest of your body. The peripheral nervous system is divided into two main parts: Autonomic nervous system (ANS): Controls involuntary bodily functions and regulates glands.
What is an example of the peripheral nervous system?
The peripheral nervous system includes the cranial nerves, the spinal nerves, the sympathetic nervous system, and the parasympathetic nervous system.
Is a peripheral part of the body?
Peripheral means “away from the center.” It refers to areas away from the center of the body or a body part. For example, the hands are peripheral to the shoulder. The toes are peripheral to the knees.
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 …
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 causes damage to peripheral nerves?
Peripheral nerves can be damaged in several ways: Injury from an accident, a fall or sports can stretch, compress, crush or cut nerves. Medical conditions, such as diabetes, Guillain-Barre syndrome and carpal tunnel syndrome. Autoimmune diseases including lupus, rheumatoid arthritis and Sjogren’s syndrome.