Ukuqonda Umsebenzi weJejunum
I jejunum iyisigaba esiphakathi samathumbu amancane, ukuxhuma i- duodenum ne-ileum. Amathumbu amancane aphakathi kwamamitha angu-22 kuya kwangu-25 ubude, futhi aphinda izikhathi eziningi; i jejunum ingamamitha ayisishiyagalombili ubude kumuntu omdala omaphakathi.
Umsebenzi weJejunum
I jejunum, kanye nezinye izindawo zomathumbu amancane, kunesibopho sokumuncitha izakhi ezivela ekudleni okugayiwe kuya egazini.
I jejunum iyakwazi ukuthatha lezi zakhi ezinezakhi ngoba ihlanganiswe nemibono efana nomunwe okuthiwa i-villi. I-villi ithatha izakhi ezinomsoco, ama-electrolyte, nama-carbohydrate, amaprotheni, namafutha adliwe ngendlela yokudla. Izakhi zitholakale egazini lapho zingasetshenziswa khona amandla wonke umzimba.
I jejunum, kanye nayo yonke emathunjini amancane, yenza kube lula ukuguqula ukudla zibe namandla, ukunika umzimba umzimba imisebenzi yansuku zonke. Ngaphandle kwamathumbu amancane, ukudla kwakuzodlula emzimbeni kepha asizukuthola izakhi, futhi sizokulamba ngokushesha.
Mayelana neJejunum
I jejunum iqala emsimbeni osolisayo we-duodenum. Le misipha ibonisa ukuphela kwesigaba sokuqala samathumbu amancane nokuqala kweJejunum. Ayikho inkomba ecacile lapho i-duodenum iphela kanye nengxenye yokugcina yamathumbu amancane, i-ileum iqala.
Njengawo wonke amathumbu amancane, i-jejunum ihlanganiswe i-membrane encane ebizwa ngokuthi i-mesentery. Ngaphezu kokusekela i jejunum, i-mesentery iphinde ihlanganise i jejunum, ikwazi ukuyigcina ifudumele. Isisindo kule jejunum sisiza ukuhambisa ukudla ngokusebenzisa uhlelo lokugaya ukudla.
Izinkinga zeJejunum
Njengengxenye yamathumbu amancane, i jejunum ingaphansi kwezinkinga eziningi.
Eminye yalezi, ngokusho kwe-US Library of Medicine, ihlanganisa:
- Ukuphuza
- Isifo se-Celiac
- Izifo
- I-cancer yomthambo
- Ukuvimbela emathunjini
- I-syndrome e-irritable syndrome
- Izilonda, ezifana nesilonda se-peptic
Isifo sikaCrohn, esibandakanya ukuvuvukala kwamathumbu, singathatha izinhlobo ezimbalwa kuhlanganise neJjunoileitis. Ngo jejunoileitis, i jejunum ivutha; izimpawu ezivela kubandakanya izigumbane, ubuhlungu, nesifo sohudo.
Umsebenzi weJejunum ku-Gastric Bypass Surgery
Ukuhlinzekwa kwe-gastric bypass yindlela yokusebenzisa izifo eziningana kodwa owaziwa kakhulu njengethuluzi lokunciphisa isisindo kubantu abakhuluphele kakhulu. Inqubo evamile yokushayela ucingo i-roux-en-Y ihilela iqala ngokuthi "ukugxilisa isisu" lapho ubukhulu besisu esisetshenziswayo buyanciphisa kakhulu. Ngokulandelayo, isisu esisha, esincanyana sinqanyuliwe engxenyeni yokuqala yamathumbu amancane (i-duodenum) futhi ixhunywe kabusha ku-jejunum.
Kunemiphumela emibili ebalulekile esuka kulolu hlobo lokuhlinzwa. Okokuqala, isikhwama esincane sesisu singabamba kancane, ngaleyo ndlela kuncishiswe inani lamakholori. Okwesibili, uma ukugaya kushiya i-duodenum, amakholori amancane nezakhi zingancipha. Ukugaya ukudla kwama-malabsorptive nakho kuyasiza ekulahlekeni kwesisindo - nakuba kunjalo, kunciphisa inani lomsoco otholakala emzimbeni.
> Imithombo:
> Medline Plus. Izifo ezincane zamathumbu. Ilabhulali Kazwelonke Yezokwelapha yase-US. Iwebhu. 2017.
> I-Pubmed Health. Jejunum. Ilabhulali Kazwelonke Yezokwelapha yase-US. Iwebhu. 2017.