MAYNAPARDA

MAYNAPARDA (Meninges), tashkilai iborat az boftahoi payvandi, ki magzi sar va harommagzro faro giriftaast. M. vazifai muhofiziyu tagziyavi doshta, harakati khunro dar mayna tanzim menamoyad.
M. sakht (Dura mater), ankabuti (Arachnoidea mater) va narm yo ragi (Pia mater) meshavad.
Pardai sakhti magzi sar az du varaq iborat ast, ki bayni hamdigar va sathi dokhilii ustukhoni kosakhonai sar zich joy giriftaand. On chand shokha meronad (dosi maynai kalon, chodari maynacha va g.), ki bayni hissahoi mayna vorid shuda, onhoro az yakdigar judo mekunand. Dar joyhoi baromadi shokhaho pardai sakht qabat-qabat shuda, jaybhoi venaviro ba vujud meorad. Ba jaybho az venahoi mayna, pardai sakht, ustukhonhoi jumjuma khun meoyad va dar sistemai venahoi yugii dokhili jam megardad.
Pardai ankabuti ba umqi juyakhoi mayna nameravad, binobar in dar bayni on va pardai narm fazoi zeriankabuti ba vujud meoyad, ki az moei mayna va harommagz pur ast. Fazoi zeriankabuti dar baze joyho farrokh gashta, zarfiyatho (sisterna)-horo tashkil mekunad.
Pardai narm az du lavhacha iborat ast, ki dar bayni onho arteriya va venahoi magzi sar joy giriftaand. Pardai narm bo boftai mayna payvast buda, dar tashakkuli raghoi chigili medachahoi mayna (onho moei maynayu harommagzro hosil mekunand) ishtirok dorad.
Ba M. shokhahoi jufti V, X va XII-i asabhoi jumjumayu mayna, inchunin chigilhoi asabi simpatii arteriyahoi subotii dokhili va sutunmuhra khidmat merasonand. Pardai sakht bar farqi pardai narm dardro ehsos mekunad; manbai asosii innervatsiyai on asabi setora ast. Innervatsiyai pardai harommagz ba tavassuti shokhahoi asabhoi harommagz va tanai asabhoi simpati surat megirad.
Pardai sakhtro arteriyahoi jogi bolo, sutunmuhra, pasi sar va khonai chashm bo khun tamin mesozand. Ankabutparda rag nadorad. Pardai narm doroi shabakai muraghost. Dar M. raghoi limfavi ba mushohida narasidaand.
KL
Pardai sakhti mayna: 1 – dosi maynai kalon; 2 – jaybi rost; 3 – chodari magzcha; 4 – diafragmai zini turki; 5 – asabi bosira va arteriyahoi subotii dokhili.