-Delile
- I-Arachnoid: i-meninx ephakathi
- Izingxenye eziyinhloko
- 1. Arachnoid noma arachnoid isithiyo ungqimba
- 2. I-arachnoid trabeculae noma ungqimba lwe-arachnoid olubonakalayo
- 3. Isikhala se-Subarachnoid
- Imisebenzi eyinhloko
- 1. Kuvikela isimiso sezinzwa
- 2. Ukusatshalaliswa koketshezi lwe-cerebrospinal
- 3. Uxhumano lwe-Vascular system-cerebrospinal fluid
- 4. Ivumela ukushuba kobuchopho
- 5. Ukubona kwengcindezi engasebenzi
- Izinkinga ezihlanganisiwe
- 1. I-Arachnoid cyst
- 2. Isifo sokuqaqamba kwamalunga
- 3. Ukuxhumana ne-hydrocephalus
- 4. I-Subarachnoid hemorrhage
Ama-meninge ayizicucu zezingqimba ezihlangene nogebhezi nekholomu lomgogodla zivikela isimiso sezinzwa esiyinhloko, ukuze ukushaywa okuncane noma ukulimala kungashintsha ukusebenza kwayo noma kukucekele phansi ngokuphelele.
Ngaphezu kwalokho, bavumela ubuchopho ukuthi bube lapho futhi, ngoba kunezinhlobo ezahlukahlukene zezinhlayiya zezinhlungu kuzo, singabona ukuthi kukhona uhlobo oluthile lwenkinga noma ukulimala. Kulesi sihloko sizohlola ulwelwesi lwe-arachnoid ukuze uhlaziye ukuthi kuyini, izici nemisebenzi yayo.
- I-athikili enconyiwe: "Izingxenye zobuchopho bomuntu (nemisebenzi yazo)"
I-Arachnoid: i-meninx ephakathi
I-arachnoid, kanye ne-dura kanye ne-mater, ingelinye lama-meninges amathathu. Lezi ulwelwesi oluvikela ubuchopho bethu kanye nomgogodla ekulimaleni okuvela ngaphandle futhi okudlala indima ebalulekile ekusindeni kwethu. Zitholakala ngaphansi kwesinye, zakha izingqimba ezintathu zokuzivikela.
Endabeni ye-arachnoid siphambi kolwelwesi oluphakathi, sihlangana ne-dura mater kanye ne-mater efanayo. Kuvela ukuthi intekenteke kakhulu futhi ithambekele ekuphuleni kokuthathu. Esinye sezici zayo eziyinhloko ukuthi ayihlanjululwa ngemithambo.
Yize besondelene kakhulu, i-arachnoid ihlukaniswe nesikhashana ngokusebenzisa isikhala esingaphansi, esingaphezulu kwesikhala, ungqimba oluncane lwamaseli phakathi kwalo olunoketshezi lwangaphakathi. Ngokuphathelene ne-mater efanayo, ihlukaniswe nayo ngesikhala se-subarachnoid, bese yona ixhuma nayo ngokusebenzisa i-arachnoid trabeculae.
Esinye sezici eziyinhloko esihlukanisa namanye ama-meninges amabili ukuthi iqukethe isikhala se-subarachnoid, lapho kuhamba khona i-cerebrospinal fluid.
Izingxenye eziyinhloko
Ukubheka i-arachnoid singabona ubukhona kubo bezendlalelo noma izingxenye ezahlukahlukene.
1. Arachnoid noma arachnoid isithiyo ungqimba
Ihambisana nengxenye ye-arachnoid exhumana ne-dura mater. Amaseli ayo abumbene futhi avumeli neze ukuthi kudlule i-interstitial fluid, okuyingxenye ephikisana kakhulu ne-arachnoid. Lolu ungqimba luvimbela ama-ion nama-molecule ukuba angene noma aphume. Kodwa-ke, kungenzeka ukuhlukanisa uchungechunge lwe-granulations noma i-arachnoid villi abaxhumana ngayo nemithambo ekhona ku-dura mater, evumela ukuthi uketshezi lwe-cerebrospinal luxoshwe ekupheleni komjikelezo walo.
2. I-arachnoid trabeculae noma ungqimba lwe-arachnoid olubonakalayo
Amaseli wephrojekthi yesendlalelo se-arachnoid barrier eya ku-mater efanayo, akha inethiwekhi eyeqa isikhala se-subarachnoid nazo ezakha inethiwekhi noma i-mesh enikeza i-meninge igama layo (ngenxa yokufana kwayo newebhu yesicabucabu). Ngaphakathi kwalokhu kuqagela sithola imicu ye-net, imicu yehange kanye nama-microfibers. Umsebenzi oqondile we-trabeculae awukaziwa ngokugcwele, yize kucatshangwa ukuthi bayakwazi ukubona ingcindezi ebangelwa i-cerebrospinal fluid.
3. Isikhala se-Subarachnoid
Yize ngaphezulu kwengxenye ye-arachnoid kuyisikhala esiphakathi kwamalitha aso, isikhala sangaphansi kwento engenye yezingxenye ezibaluleke kakhulu ze-arachnoid. Lokhu kunjalo ngoba kungalesi sikhathi lapho kudlula khona uketshezi lwe-cerebrospinal. Kulesi sikhala singathola futhi uchungechunge lwemigodi ebalulekile ye-cerebral kanye nemithombo lapho i-cerebrospinal fluid iqongelela khona futhi evumela ukusatshalaliswa kwayo.
Ngaphezu kobuchopho uqobo, kungatholakala isikhala se-orbital subarachnoid esizungeze imizwa ye-optic.
Imisebenzi eyinhloko
I-arachnoid ulwelwesi, njengamanye ama-mening, olunemisebenzi ehlukile evumela futhi ithande ukusinda kwethu.
1. Kuvikela isimiso sezinzwa
Yize intekenteke, i-arachnoid kanye namanye ama-meninges avumela ubuchopho nomgogodla ukuthi uvikeleke ekushayweni nasekulimaleni, kanye nokungcola kanye nokutheleleka ngama-ejenti ayingozi.
2. Ukusatshalaliswa koketshezi lwe-cerebrospinal
Kuku-arachnoid naku-cisternae ehlukile yesikhala sangaphansi kwesikhala lapho kuzungeza khona uketshezi lwe-cerebrospinal, into ebalulekile yokugcina izinzwa zesistimu yezinzwa ziphila ngokuzondla futhi ngokuvumela ukuqedwa kukadoti ekusebenzeni kobuchopho.
3. Uxhumano lwe-Vascular system-cerebrospinal fluid
I-cerebrospinal fluid ithwala imfucumfucu evela ebuchosheni, kepha idinga ukuxoshwa. Lokhu kwenziwa ngegazi lemithambo ye-dura mater, i-arachnoid exhumana nayo. Ngendlela efanayo, ivimbela uketshezi lwe-cerebrospinal ekuqongeleleni ngokweqile, olungayeki ukufihlwa.
4. Ivumela ukushuba kobuchopho
Iqiniso lokuthi uketshezi lwe-cerebrospinal luzungeza ingaphakathi luvumela ubuchopho ukuthi buthonze ngandlela thile, eyehlisa isisindo sayo futhi ivumele ukugcinwa kwe-morphology yayo.
5. Ukubona kwengcindezi engasebenzi
Yize kuyinto engaziwa ngokuphelele, kusolwa ukuthi yi-trabeculae ye-arachnoid lezo ezivumela umzimba ukuthi ubone ukwanda kwengcindezi yokungasebenzi.
Izinkinga ezihlanganisiwe
Kukhona ukuthinta okuhlukahlukene okuxhunyaniswe nezinguquko ku-arachnoid noma kwelinye lamamenyu. Phakathi kwalezi zinguquko singathola okulandelayo.
1. I-Arachnoid cyst
Izakhiwo ezincane ze-cystic zingakha ngaphakathi kwe-arachnoid bese zigcwalisa uketshezi lwe-cerebrospinal. Ngenkathi kungenzeka zingadali izinkinga, zingadala ingcindezi elimaza uhlelo lwezinzwa. Ukuphathwa yikhanda, izinkinga zemizwa, i-paresthesia, noma ukukhubazeka kuvamile.
2. Isifo sokuqaqamba kwamalunga
Kokubili i-arachnoid nawo wonke amanye ama-meninges anganqotshwa ukutheleleka ngegciwane noma ibhaktheriya, kuvuthe futhi kubangele izimpawu ezahlukahlukene njengesizungu, ikhanda noma ubuthakathaka. Ukwakheka koketshezi lwe-cerebrospinal olujikeleza i-arachnoid kungashintshwa, kanye nokubangela ukucindezelwa kobuchopho.
3. Ukuxhumana ne-hydrocephalus
Kuyisifo lapho i-cerebrospinal fluid iqongelela ngaphakathi kogebheziKulokhu, ngoba izingxenye ze-arachnoid ezivumela ukuxhumana phakathi kwayo negazi lemithambo azisebenzi kahle, ziqongelela uketshezi oluningi futhi zingazifaki egazini.
4. I-Subarachnoid hemorrhage
Kuvela uma kungenxa yokugula noma ukulimala (njengokulimala ekhanda), igazi lingena ligcwale esikhaleni se-subarachnoid. Kungabulala. Ukuphathwa yikhanda, ukuqonda okushintshiwe, nezinkinga zesisu ezifana nesicanucanu nokuhlanza kuvamile.
