Li-acid, li-enzyme, Mucus le tse ling
Hang ha u beha lijo ka molomong oa hao mpa ea hao e qala ho lokolla lero la gastric. Motsoako ona oa metsi o tla thusa ho qhaqha lijo hang ha o fihla ka mpeng mme mokhoa oa ho tsuba o qala.
Lijo tsee li entsoe ka eng 'me li boloka' meleng oa hao o phetse hantle joang? A re nke leeto la mohato oa pele oa tsamaiso ea hau ea lijo 'me u fumane.
Kamoo 'Mele oa Hao o Hlahisang Gastric Juices
Lijo tseo u li hlahisang le ho li ja li bitsoa bolus.
E kopanya le lero la gastric le entsoeng ke litšoelesa tse ikhethang tse fumanoang ka kamoreng ea mpa. Li akarelletsa litšoelesa tsa pelo tse karolong e ka holimo ea mpa, litšoelesa tsa oxyntic ka har'a 'mele o moholo oa mpa, le litšoelesa tsa pyloric tse ka hare kapa karolo e tlase ka mpeng.
Tse ling tsa litšoelesa li na le lisele tse etsang likaroloana tse itseng tse kopanetsoeng tse bitsoang li-gastric juices. Lisele tsa masela li sireletsa bicarbonate le li-mucous, parietal cell secrete hydrochloric acid, lisele tse khōlō li sireletsa pepsinogen, le lisele tse enteroendocrine li sireletsa li-hormone tse sa tšoaneng. Leha ho le joalo, hase litšoelesa tsohle tsa mala tse nang le mofuta o mong le o mong oa sele.
Ho senya Lijo tsa Gastric
Jusi ea gastric e entsoe ka metsi, electrolyte, hydrochloric acid, li-enzyme, li-muscus, le ntho ea tlhaho.
Hydrochloric acid e na le acid e matla e pateletsoeng ke lisele tsa parietal, 'me e theola pH ea hao ho ea ho e potoloha 2. Hydrochloric acid e fetola pepsinogen ho pepsin ebe e pshatla limatlafatsi tse sa tšoaneng ntle le lijo tseo u li jang.
E boetse e bolaea libaktheria tse tlang le lijo tsa hau.
Pepsinogen e ngotsoe ke lisele tse khōlō, 'me ha e le teng boteng ba hydrochloric acid, e fetoloa ho pepsin. Pepsin e arohana le mehaho ea liprotheine tsa thuto e phahameng le ea bobeli ho etsa hore ho be bonolo hore li-enzyme tsa 'mele li sebetse hamorao.
Gastric lipase ke enzyme e 'ngoe ea ho senya lijo e entsoeng ke lisele tse khōlō. E thusa ho senya lihlahisoa tse khutšoane le tse bohareng.
Amylase e boetse e fumanoa ka lero la gastric, empa ha e etsoa ka mpa. Enzyme ena e tsoa malapeng 'me e tsamaea le bolus ka mpeng. Amylase o senya lik'habohaedreite, empa ha a na nako e ngata ea ho sebetsa ka mpeng hobane acidity e e thibela. Empa ha ho joalo, mala a hao a manyenyane a etsa hore ho be le li-amylase hamorao.
Ntho ea bohlokoa e entsoe ka lisele tsa parietal mme ho hlokahala hore 'mele oa hau o amohele vithamine ea B-12. Sena ke sa bohlokoa bakeng sa ts'ebetso ea tsamaiso ea methapo e nepahetseng le tlhahiso ea sele ea mali.
Qetellong, lero la gastric le na le metsi le li-musque. Mocus e ngotsoe ke lisele tsa molala 'me e thusa seaparo le ho sireletsa lesela la hao la mala ho tloha tikolohong ea acid.
Bohle Bo Sebelisana Hammoho
Matšoao a hao a mala a petetsa 'me a khaotsa ho kopanya bolus le tsena tsohle tsa lero la lijo. Motsoako oa metsi o bitsoa chyme. Ha e se e loketse, mpa ea hao e senya lesea ka maleng a mangata moo ho tsitsitseng ho ntseng ho tsoela pele le ho kenngoa ha limatlafatsi tsa bohlokoa ka ho fetisisa.
> Mehloli:
> Monghali SS, Smith JL, JL Groff. Phepo e nepahetseng le Metabolism ea Batho. 6th ed. Belmont, CA: Wadsworth Publishing Company; 2013.
> Smolin LA, Grosvenor, MB. Ho ja lijo: Setsebi le Likōpo. 4th ed. Hoboken, NJ: Wiley Publishing Company; 2016.
> Wallace M. Your System Digestive le kamoo e sebetsang kateng. Setsi sa Sechaba sa lefu la tsoekere le mafu a likobo le a liphio (NIDDK). 2013.