Emathunjini amancinci ... Uphi na ibhityile - apho akuyichazi?

Enyanisweni, nangona igama layo, lo iziko inkqubo yokwetyisa lomelele ngokwaneleyo. Ngoko igama elithi "nyembezi" linokuthetha, kunoko, umonakalo kwesicwangciso - hayi emzimbeni, kwaye zisebenza. Kodwa emathunjini yazo ubethwa ubuncinane nezinye izigqeba, nendlela enye, xa sisoloko zilayishwe umsebenzi wakhe, usoloko ubukhulu becala ukuba izala.

Hi ndlela leyi, emathunjini amancinci akunjalo ezingaqondakaliyo - ukusuka cm 3,75 ukuya ku-5 ububanzi, kuba nje ngokuba "umahluko" kunye Amathumbu amakhulu. Yena imele ityhubhu malunga 7.5 eemitha ubude, apho imigaqo ezininzi "isongiwe" kungena kwisisu. Kodwa ke isakhiwo emathunjini amancinci ayipheleli ityhubhu nje omnye - kukho amalungu amathathu: duodenum, emathunjini amancinci ileum. Nganye - injongo yabo.

Ngoko ke, emva kokuba imveliso kwi chyme isisu ngendlela reflex engena emathunjini amancinci. Kwaye oku ngokuthe enza akusebenzi. Iliza enamandla peristaltic utyhila nangengalo lwekeyboard eyomeleleyo - uhlobo lwe kwanasephepheni yokuphuma esiswini. Le nkqubo iqinisekisa a flow efanayo. Ngoko inxalenye gruel "aphoswe" ekuqaleni emathunjini amancinci - le duodenum. Nangona inxalenye imfutshane - 25-30 kuphela cm - kodwa oku kulapho iinkqubo kanzulu ebaluleke yokwetyisa. Ukutya ezigcinwe kwi-processing esiswini, ugalelwe ngokugqithiseleyo kunye juice esiswini, leyo asidi kwaye bangabi ngononophelo enzayim yavelisa eludongeni duodenal, kwakunye nezo ukuba isuka apha zepancreas. Nemalanana zaziswa kwaye isinye nenyongo, eye umnyango yalo apha - iya ngokusebenzisa imveliso isibindi - inyongo kunceda ukugaya amafutha. Umxube juice wamathumbu kunye duct lusicande pancreatic amaqhosha ukutya okunjalo amasuntswana ngomzuzu, nto leyo ke eya kuba akukho ngxaki zifunxwe ngumzimba izakhamzimba ngenxa eludongeni emathunjini.

In the jejunum, ubude ogama zimalunga nesi-3.5 yeemitha, uhlelo enzymes impembelelo. Iindonga eli sebe, kwakunye le ileum, baxhotyiswa kunye nezigidi villi encinane, apho bathi bafakwe izondlo igazi. Ileum them zuza sele ngaphantsi - eli ikhadi "wakhonza 'ukuya calcium umzimba, ezinye iiminerali neevithamini, amacandelo duct, kunye namanzi. Yaye uphume, edlula kummandla ileocecal umjelo, ukutya undigested ocande Amathumbu amakhulu.

In emathunjini amancinci yeentlobo ezimbini kwezindululo gqolo kwenzeka - peristaltic pendular yaye - zihamba ukutya ngesilinganiso ka-2 cm ngomzuzu. Lo msebenzi ingxolo ethile esiyibiza "isisu ukuduma." ukusilela Motor, kunye ezahlukeneyo ukuqunjelwa (kakuhle umsebenzi oqhelekileyo) nje ezi zifo zixhaphakileyo ejongene emathunjini amancinci. Amaninzi kunye esiswini okanye emathunjini enkulu ochaphazelekayo, yena gastoenteritami, enterocolitis kunye gastroehnterokolitah. iinkqubo ukudumba kule nxalenye ukuphazamiseka wokugaya nesiphumo secretory and motor umsebenzi "umzali" amasebe, pathways kunye ukujikeleza kwegazi, negazi kunye neziphumo zemozulu ezingaqhelekanga.

Iimpawu zesifo wamathumbu - its ubukhulu becala into esiyibiza iintlungu esiswini (ngokubanzi, oku isiyatha iintlungu inkaba), imvakalelo edandatheka, okanye Bovuthela-kwentaba. Linophawu yintloko kunye ubuthathaka jikelele, ukungabi namdla kunye nokutha emzimbeni, maxa wambi kwenzeka ukuphazamiseka luvo.

Hlala ukhumbula ukuba abaninzi badla kukhokelela kwiziphumo isifo wamathumbu ityhefu imichiza, iziyobisi kunye neemveliso onganeno, kwakunye ukuphazamiseka yokudla. Ngoko ke, ukuvimbela engcono a nenengqondo ukudla, ukupheliswa icuba kunye notywala, kunye nokongezwa nezongezo zokutya kunye neevithamini.