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ASAB

677058ASAB, torhoe, ki bayni silsilai markazii asab va uzvu boftahoi gunogun robita barqaror menamoyad. A. az berun bo parda (epinevriy) faro girifta shudaast, ki doroi raghoi khun va limfa meboshad. A. shokhaho doshta, intihoi onho to uzvu boftaho rafta merasad. Dar organizmi odam majmui A.-ho sistemai asabhoi kanoriro ba vujud meorand. Az magzi sar 12 juft A.-hoi jumjumavi va az harommagz muvofiq ba bandhoi on 31 juft A.-hoi harommagzi ibtido megirand. Vobasta ba joygiri A.-ho sathi (A.-hoi pusti), amiq (chuqur), az rui vazifa boshad, harakatovar, harakatovari ragho, tarashshuhi (kori gadudhoro tanzim mekunand) va g. meshavand. Nomi bisyor A.-ho az nomi uzv (mas., A.-i chashm), mavqei anatomiyu topografi (mas., A.-i ruy), faoliyat (mas., A.-i binoi) va g. barmeoyad.
A. az nakhho iborat ast, ki har yaki onho shokhchai hujayrai asab buda, angezishro ba digar uzvu boftaho intiqol medihand. Nakhhoi A. du nav – mielindor va bemielin meshavand. Vobasta ba samti intiqoli junbaho (impulsho) nakhhoi A.-i markazshitob (afferenti yo hassos; junbahoro az retseptorho ba silsilai markazii asab mebarand) va markazgurez (efferenti yo harakatovar; junbahoro az silsilai markazii asab va girehhoi naboti ba uzvho intiqol medihad)-ro farq mekunand.
Oid ba bemorihoi A. nig. Nevrit, Radikulit, Pleksit.
KL
Rasmi 1. Nakhi asab: A – nakhi mielindor; B – nakhi be mielin; 1 – mehvar; 2 – qabati mielini; 3 – mezakson; 4 – yadroi neyrolemmosit (hujayrahoi SHvann); 5 – pardai asosi; 6 – tangnoi Ranvye; 7 – neyrofilamentho; 8 – mitokhondriya.
Rasmi 2. Asabhoi chehra va saru gardan: 1 – shokhahoi asabi chakkai sar; 2 – shokhahoi asabi boloi chashmkhona; 3 – shokhchahoi asabi rukhsora; 4 – asabi zeri kosakhonai chashm; 5 – shokhchahoi asabi rukhsora; 6 – asabi ruy; 7 – asabi manah; 8 – asabi kanorii jogi poyon; 9 – shokhchai asabi gardan; 10 – asabi kundalangi gardan; 11 – asabhoi boloi okhurak; 12 – asabi izofagi; 13 – asabi kaloni gush; 14 – asabi khurdi pasi gardan; 15 – asabi kaloni pasi gardan; 16 – asabi gushu chakkai sar.

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