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神經束周圍的鞘 来自维基百科,自由的百科全书
神經束膜(英文:Perineurium)為神經中保護性結締組織的第二層,為一光滑透明的薄膜,將神經纖維分隔成束、形成神經束[1]。神經束膜可輕易地與其包覆的神經纖維分離,以管狀外鞘的形式獨立出來。神經束膜外層為結締組織,內層則由大約7~8層扁平上皮細胞所組成,稱為神經束膜上皮(perineural endothelium)[2]。
神經束膜性質強韌、不易被針穿透,此點與神經外膜不同。
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