What does perineurium mean?

Definitions for perineurium
ˌpɛr əˈnʊər i əm, -ˈnyʊər-; -ˈnʊər i ə, -ˈnyʊər-per·ineuri·um

This dictionary definitions page includes all the possible meanings, example usage and translations of the word perineurium.

Princeton's WordNet

  1. perineuriumnoun

    the sheath of connective tissue that covers a bundle of nerve fibers

Wiktionary

  1. perineuriumnoun

    The sheath of connective tissue that surrounds a fascicle of nerve fibres

Wikipedia

  1. Perineurium

    The perineurium is a protective sheath that surrounds a nerve fascicle. This bundles together axons targeting the same anatomical location. The perineurium is composed from fibroblasts.In the peripheral nervous system, the myelin sheath of each axon in a nerve is wrapped in a delicate protective sheath known as the endoneurium. Fascicles, bundles of neurons, are surrounded by the perineurium. Several fascicles may be in turn bundled together with a blood supply and fatty tissue within yet another sheath, the epineurium. This grouping structure is analogous to the muscular organization system of epimysium, perimysium and endomysium.

ChatGPT

  1. perineurium

    The perineurium is a layer of connective tissue that surrounds each fascicle (bundle of nerve fibers) in a nerve. It helps to protect the nerves and maintain the blood-nerve barrier, playing a crucial role in the peripheral nervous system.

Webster Dictionary

  1. Perineuriumnoun

    the connective tissue sheath which surrounds a bundle of nerve fibers. See Epineurium, and Neurilemma

  2. Etymology: [NL., fr. Gr. peri` about + ney^ron a nerve.]

Wikidata

  1. Perineurium

    In the peripheral nervous system, nerve fibers are each wrapped in a protective sheath known as the endoneurium. These are bundled together into groups known as fascicles, each surrounded by a protective sheath known as the perineurium. Several fascicles may be in turn bundled together with a blood supply and fatty tissue within yet another sheath, the epineurium. This grouping structure is analogous to the muscular organization system of epimysium, perimysium and endomysium. The perineurium is composed of connective tissue, which has a distinctly lamellar arrangement consisting of roughly 7-8 concentric layers. The perineurium is cellular, and is composed of perineurial cells, which are epithelioid myofibroblasts. Perineurial cells are sometimes referred to as myoepithelioid due to their epithelioid and myofibroblastoid properties including tight junctions, gap junctions, external laminae and contractility. The perineurium is a smooth, transparent tubular membrane which may be easily separated from the fibers it encloses. In contrast, the epineurium is a tough and mechanically resistant tissue which is not easily penetrated by a needle.

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Numerology

  1. Chaldean Numerology

    The numerical value of perineurium in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of perineurium in Pythagorean Numerology is: 5

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"perineurium." Definitions.net. STANDS4 LLC, 2024. Web. 28 Mar. 2024. <https://www.definitions.net/definition/perineurium>.

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