Definition of perineurium in English:

perineurium

noun ˌpɛrɪˈnjʊərɪəmˌperəˈn(y)o͝orēəm

mass nounAnatomy

The sheath of connective tissue surrounding a bundle (fascicle) of nerve fibres within a nerve.
〔剖〕神经束膜
Example sentencesExamples
- However, in most of the smaller fibers the space between nerve and perineurium was reduced or absent, so that it could not be established whether the peripheral staining represented nerve fibers or perineurium.
- Briefly, the nerve fibers were closely packed in the nerve bundles in the endoneurial areas surrounded by the perineurium and the epineurium.
- In these lesions, the hyphae appeared to invade the perineurium, the loose fascial sheath surrounding the nerve.
- It strongly stained the perineurium but did not stain the nerve fibers within the perineurium, thus giving a ringlike staining pattern.
- The endoneurium is continuous with the more abundant connective tissue perineurium, which envelops bundles of nerve fibers.
Synonyms
covering, cover, case, casing, envelope, sleeve, wrapper

Derivatives

perineural

adjective ˌpɛrɪˈnjʊərəlˌpɛrəˈn(j)ʊrəl

Anatomy

Located around a nerve or a bundle of nerve fibres.
a perineural cyst
Example sentencesExamples
- perineural inflammation
- The distribution of amyloid (endoneurial, perineurial, or epineurial), the presence of inflammation, and the presence of axonal degeneration or demyelination were recorded for each case.
- It may be that epithelial membrane antigen is focally positive, a finding in agreement with the presence of perineurial cell component in the tumors.
- In one of these 2 biopsies, ganglion cells were identified within the perineurial ring.

Origin

Mid 19th century: modern Latin, from Greek peri- 'around' + neuron 'sinew'.

Definition of perineurium in US English:

perineurium

nounˌperəˈn(y)o͝orēəm

Anatomy

The sheath of connective tissue surrounding a bundle (fascicle) of nerve fibers within a nerve.
〔剖〕神经束膜
Example sentencesExamples
- In these lesions, the hyphae appeared to invade the perineurium, the loose fascial sheath surrounding the nerve.
- It strongly stained the perineurium but did not stain the nerve fibers within the perineurium, thus giving a ringlike staining pattern.
- Briefly, the nerve fibers were closely packed in the nerve bundles in the endoneurial areas surrounded by the perineurium and the epineurium.
- However, in most of the smaller fibers the space between nerve and perineurium was reduced or absent, so that it could not be established whether the peripheral staining represented nerve fibers or perineurium.
- The endoneurium is continuous with the more abundant connective tissue perineurium, which envelops bundles of nerve fibers.
Synonyms
covering, cover, case, casing, envelope, sleeve, wrapper

Origin

Mid 19th century: modern Latin, from Greek peri- ‘around’ + neuron ‘sinew’.

单词	perineurium
释义	Definition of perineurium in English: perineurium noun ˌpɛrɪˈnjʊərɪəmˌperəˈn(y)o͝orēəm mass nounAnatomy The sheath of connective tissue surrounding a bundle (fascicle) of nerve fibres within a nerve. 〔剖〕神经束膜 Example sentencesExamples However, in most of the smaller fibers the space between nerve and perineurium was reduced or absent, so that it could not be established whether the peripheral staining represented nerve fibers or perineurium. Briefly, the nerve fibers were closely packed in the nerve bundles in the endoneurial areas surrounded by the perineurium and the epineurium. In these lesions, the hyphae appeared to invade the perineurium, the loose fascial sheath surrounding the nerve. It strongly stained the perineurium but did not stain the nerve fibers within the perineurium, thus giving a ringlike staining pattern. The endoneurium is continuous with the more abundant connective tissue perineurium, which envelops bundles of nerve fibers. Synonyms covering, cover, case, casing, envelope, sleeve, wrapper Derivatives perineural adjective ˌpɛrɪˈnjʊərəlˌpɛrəˈn(j)ʊrəl Anatomy Located around a nerve or a bundle of nerve fibres. a perineural cyst Example sentencesExamples perineural inflammation The distribution of amyloid (endoneurial, perineurial, or epineurial), the presence of inflammation, and the presence of axonal degeneration or demyelination were recorded for each case. It may be that epithelial membrane antigen is focally positive, a finding in agreement with the presence of perineurial cell component in the tumors. In one of these 2 biopsies, ganglion cells were identified within the perineurial ring. Origin Mid 19th century: modern Latin, from Greek peri- 'around' + neuron 'sinew'. Definition of perineurium in US English: perineurium nounˌperəˈn(y)o͝orēəm Anatomy The sheath of connective tissue surrounding a bundle (fascicle) of nerve fibers within a nerve. 〔剖〕神经束膜 Example sentencesExamples In these lesions, the hyphae appeared to invade the perineurium, the loose fascial sheath surrounding the nerve. It strongly stained the perineurium but did not stain the nerve fibers within the perineurium, thus giving a ringlike staining pattern. Briefly, the nerve fibers were closely packed in the nerve bundles in the endoneurial areas surrounded by the perineurium and the epineurium. However, in most of the smaller fibers the space between nerve and perineurium was reduced or absent, so that it could not be established whether the peripheral staining represented nerve fibers or perineurium. The endoneurium is continuous with the more abundant connective tissue perineurium, which envelops bundles of nerve fibers. Synonyms covering, cover, case, casing, envelope, sleeve, wrapper Origin Mid 19th century: modern Latin, from Greek peri- ‘around’ + neuron ‘sinew’.
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