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nerve

File:1319_Nerve_StructureN.jpg · Wikimedia Commons · See Wikimedia Commons

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A nerve is an enclosed, cable-like bundle of nerve fibers (called axons). Nerves have historically been considered the basic units of the peripheral nervous system. A nerve provides a common pathway for the electrochemical nerve impulses called action potentials that are transmitted along each of the axons to peripheral organs or, in the case of sensory nerves, from the periphery back to the central nervous system. Each axon is an extension of an individual neuron, along with other supportive cells such as some Schwann cells that coat the axons in myelin.

AI overview

A nerve is a cable-like bundle of fibers that carries electrical signals between your brain and body, allowing information to travel to and from your organs and senses. Nerves matter because they form the communication system that connects your central nervous system to the rest of your body, enabling movement, sensation, and bodily functions.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Nerve.Name
Nerve
Nerve.Latin
nervus
Nerve.Image
1319 Nerve StructureN.jpg
Nerve.Caption
Cross-section of a nerve
Nerve.System
Nervous system

via Wikipedia infobox

Wikidata facts

Image
Nerves of the left upper extremity.gif
Show 4 more facts
equivalent class
schema.org/Nerve
Commons category
Nerves
NCI Thesaurus ID
C12466
Sources (5)

via Wikidata · CC0

~12 min read

Article

13 sections
Contents
  • Structure
  • Categories
  • Terminology
  • Development
  • Function
  • Nervous system
  • Clinical significance
  • Other animals
  • History
  • See also
  • References
  • Further reading
  • External links

A nerve is an enclosed, cable-like bundle of nerve fibers (called axons). Nerves have historically been considered the basic units of the peripheral nervous system. A nerve provides a common pathway for the electrochemical nerve impulses called action potentials that are transmitted along each of the axons to peripheral organs or, in the case of sensory nerves, from the periphery back to the central nervous system. Each axon is an extension of an individual neuron, along with other supportive cells such as some Schwann cells that coat the axons in myelin.

Each axon is surrounded by a layer of connective tissue called the endoneurium. The axons are bundled together into groups called fascicles, and each fascicle is wrapped in a layer of connective tissue called the perineurium. The entire nerve is wrapped in a layer of connective tissue called the epineurium. Nerve cells (often called neurons) are further classified as either sensory or motor.

Gallery (4)

Connections

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