また、以下は「Wikipedia」の解説文となる。
「The endoneurium (also called endoneurial channel, endoneurial sheath, endoneurial tube, or Henle's sheath) is a layer of delicate connective tissue around the myelin sheath of each myelinated nerve fiber. Its component cells are called endoneurial cells.The endoneuria with their enclosed nerve fibers are bundled into groups called nerve fascicles, each fascicle within its own protective sheath called a perineurium. In sufficiently large nerves multiple fascicles, each with its blood supply and fatty tissue, may be bundled within yet another sheath, the epineurium.
【 語 句 】
・connective tissue: ・myelin sheath:・myelinated nerve fiber: ・endoneurial cells:神経内膜細胞? ・endoneuria:endoneurium(神経内膜)の複数形 ・nerve fascicles:神経線維束 ・perineurium:神経周膜 ・epineurium:神経上膜
The endoneurium contains a liquid known as endoneurial fluid, which contains little protein. In the peripheral nervous system the endoneurial fluid is notionally equivalent to cerebro-spinal fluid in the central nervous system. Peripheral nerve injuries commonly release increased amounts of endoneurial fluid into surrounding tissues; these can be detected by magnetic resonance neurography, thereby assisting in locating injuries to peripheral nerves.
【 語 句 】
・endoneurial fluid:神経内膜液 ・peripheral nervous system:末梢神経系 ・equivalent:同等のもの ・cerebro-spinal fluid: ・脳脊髄液: ・central nervous system:中枢神経系 ・magnetic resonance neurography:磁気共鳴神経画像法
The endoneurium runs longitudinally along the nerve fiber, but with discontinuities where septa pass inward from the innermost layer of the perineurium. It contains fine bundles of fibrous connective tissue, primarily collagen, embedded in a matrix of ground substance. This structure serves to support capillary blood vessels, arranged so as to form a network of elongated meshes. Similar structures occur around some nervous components elsewhere in the body, for example around the Schwann cells on the peripheral side of the transitional zone on the auditory nerve.」
【 語 句 】
・discontinuity:不連続、中断 ・septa:中隔 ・fibrous connective tissue:線維性結合組織 ・capillary blood vessels:毛細血管 ・elongated:細長い ・Schwann cells:シュワン細胞 ・transitional zone:移行帯 ・auditory nerve:聴神経
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