Endoneurium

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Endoneurium

Endoneurium (pronounced: en-doh-noor-ee-uhm) is a layer of delicate connective tissue that surrounds individual nerve fibers within a peripheral nerve. It is derived from the Greek words "endon" meaning within, and "neuron" meaning nerve.

Etymology

The term "Endoneurium" is derived from two Greek words: "endon", which means 'within', and "neuron", which means 'nerve'. Thus, the term literally translates to 'within the nerve'.

Structure

The endoneurium is the innermost layer of connective tissue around a nerve fiber. It is composed of collagen and elastin fibers, and is responsible for providing both support and nutrition to the nerve fibers. It also plays a crucial role in the repair and regeneration of damaged nerve fibers.

Function

The primary function of the endoneurium is to protect and support individual nerve fibers within a nerve. It provides a barrier against foreign substances, and also helps in the maintenance of the blood-nerve barrier, which is crucial for the proper functioning of the nerves.

Related Terms

  • Perineurium: The sheath of connective tissue surrounding a bundle (fascicle) of nerve fibers within a nerve.
  • Epineurium: The outermost layer of dense irregular connective tissue enclosing a peripheral nerve.
  • Nerve fiber: A long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body.
  • Connective tissue: A type of tissue that provides support and structure to other tissues and organs in the body.

See Also

External links

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