Inendima yamathumbu amancinci ekubongeni kubaluleke kakhulu kwaye, kungathiwa, isigaba sokugqibela kwi-hydrolysis yokutya kwizinto zokugqibela eziyimfuneko kumzimba wethu.
Ulwazi olubanzi malunga nomathumbu omncinci womntu
Izigaba eziphambili zokugonya zigqityiwe emathunjini amancinci, eli lilungu elide kunabo bonke, kunye nomhlaba wokutshatyalaliswa kwamanzi angama-200 square meters. Kule nxalenye yesondlo sesisu esisininzi sezondlo, kunye neetyhefu, i-toxins, iziyobisi kunye ne-xenobiotics ezongconywa yindlela yomlomo zithathwa. Ukongezelela ekutyeni, ukutywala kunye nokuthutha kwazo zonke ezi zinto, imisebenzi ye-hormone secretion kunye nokukhusela umzimba kuyenziwa emathunjini amancinci.
Amathumbu amancinci aquka amasebe amathathu:
- duodenum;
- i jejunum;
- ileamu.
Nangona kunjalo, phakathi kwamasebe amabini okugqibela akukho mda uchazwe ngokucacileyo.
Zonke izicathulo zamathumbu amancinci zilahla kwaye zineengqungqelo ezine:
- membranes;
- i-submucosal;
- imisipha;
- serous.
Ubuncwane bunjani kumathumbu amancinci?
Ukutya okuvela esiswini kungena kwicandelo le-duodenal, apho libonakaliswe libi, kunye nejezi ze-pancreatic and intestinal. Ukugonywa kumathumbu omncinci omntu usebenza ngokubanzi ekuthineni izondlo, kwaye ngoko ke apha ukuba ukutya kokugqibela kokutya okudliwayo kwenzeka ngokuncediswa kwejusi lomathumbu, elinamalungu amathathu e-enzymes. Kule meko, kukho iintlobo ezimbini zokugaya kwi-intestine encinci: intambo kunye neparietal. Ngokungafani nokugonywa kwe-parietal ye-parietal kwiibhere ezincinci zamathumbu malunga nama-80% ezigaba zokugqibela ze-hydrolysis kwaye ngexesha elifanayo ukuxutywa kwezinto ezidliwe ekudleni.
Ama-enzyme akhiqizwa zizigulane zamathumbu amancinci angahlula kuphela iminyango emfutshane yeep peptide kunye noshukela,
Sekunjalo iiseli ze-epithelium zamathumbu amancinci zenza into ebizwa ngokuba yi-mesh, ekuya kuthi kudlulelwe kuyo izinto ezizodwa kuphela, kunye nama-molecule angatshintshi okomashi okanye iprotheni, umzekelo, akakwazi ukungena kwaye athuthwa "ukuqhubela phambili".