Video: Dab tsi tiv thaiv lub plab hauv plab los ntawm cov kua qaub?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Hauv plab ob peb mucosal tiv thaiv mechanisms tiv thaiv lub plab tiv thaiv hydrochloric kua qaub thiab cov neeg tsis muaj zog. Pre-epithelial kev tiv thaiv yog tsim los ntawm mucus-bicarbonate barrier. Mucus thiab bicarbonate, secreted los ntawm mucus hlwb, tsim ib tug pH gradient tswj lub epithelial cell nto nyob ze nruab nrab pH.
Tsis tas li ntawd, lub plab tiv thaiv nws tus kheej los ntawm hydrochloric acid li cas?
Lub hwj chim hydrochloric acid tua cov kab mob, tiv thaiv koj lub cev los ntawm cov kab mob phem uas tuaj yeem nkag mus rau koj lub cev hauv cov zaub mov. Koj plab tiv thaiv nws tus kheej los ntawm kev zom los ntawm nws tus kheej enzymes, los yog hlawv los ntawm corrosive hydrochloric acid , los ntawm secreting nplaum, neutralizing mucus uas clings mus rau plab phab ntsa
Ib yam nkaus, cov kab mob dab tsi tuaj yeem muaj sia nyob hauv cov kua qaub? pylori, cov ua tau circumvent cov kua qaub tej yam kev mob ntawm plab los ntawm kev tsim kho cov txheej txheem hloov pauv uas tso cai rau cov no kab mob rau ciaj sia nyob rau hauv kua qaub ib puag ncig. Raws li qhov tsim nyog, cov no cov kab mob tuaj yeem muaj sia nyob acidic plab mob thiab kis mus rau hauv txoj hnyuv, qhov twg lawv ua tau induce gastroenteritis.
Hauv qhov no, cov cell twg tiv thaiv lub plab hauv plab los ntawm cov lus nug acid?
Pepsinogen tiv thaiv hlwb ntawm plab qog thiab hnoos qeev pab tiv thaiv kab mob plab los ntawm pepsin thiab kua qaub . Lub plab hauv plab (epithelium) tau hloov pauv txhua txhua 3 hnub!
Dab tsi neutralizes HCl hauv plab?
Hauv duodenum, plab acid yog neutralized los ntawm sodium bicarbonate. Qhov no tseem thaiv plab enzymes uas muaj lawv cov optima nyob rau hauv lub acid ntau ntawm pH. Kev tso dej ntawm sodium bicarbonate los ntawm cov txiav txiav yog ua los ntawm secretin.
Pom zoo:
Cov cell twg tiv thaiv lub plab hauv plab los ntawm cov lus nug acid?
Pepsinogen tiv thaiv cov qog nqaij hlav hauv lub plab thiab cov hnoos qeev pab tiv thaiv lub plab hauv plab los ntawm pepsin thiab kua qaub
Vim li cas cov kua qaub thiab enzymes hauv plab tsis nquag zom plab hauv plab?
STOMACH tsis zom nws tus kheej vim tias nws tau hlua nrog cov epithial cells, uas tsim cov hnoos qeev. Qhov no ua ib qho teeb meem ntawm sab hauv ntawm lub plab thiab cov ntsiab lus. Enzymes, uas ua ib feem ntawm cov kua txiv zom zaub mov kuj tseem zais los ntawm lub plab phab ntsa, los ntawm cov qog uas tsis muaj qhov thaiv qhov ncauj
Lub hauv paus tseem ceeb ntawm cov kua qaub plab yog dab tsi?
Cov kua qaub. Cov kua qaub hauv plab, kua txiv plab, lossis qee zaum hu ua kua qaub plab, yog cov kua dej zom ua kua hauv lub plab thiab tsim los ntawm hydrochloric acid, potassium chloride, thiab sodium chloride
Dab tsi yog qhov kev txiav txim ntawm cov kua qaub rau cov enzyme hauv qaub ncaug?
Carbohydrates tau tawg thoob plaws hauv lub plab. Salivary amylase yog ib qho enzyme hauv lub qhov ncauj uas pib zom cov carbohydrates hauv daim ntawv ntawm cov hmoov txhuv nplej los ntawm kev cuam tshuam cov hydrolysis ntawm polysaccharides rau hauv disaccharides. Txawm li cas los xij, qhov chaw tseem ceeb rau kev zom zaub mov carbohydrate yog cov hnyuv me
Lub luag haujlwm ntawm cov kua qaub hauv plab yog dab tsi?
Acid nyob rau hauv peb lub plab ua lub luag haujlwm tseem ceeb hauv lub cev tiv thaiv kab mob los ntawm kev tua cov kab mob phem thiab cov kab mob cab uas tau noj nrog zaub mov. Lub plab acid ua kom lub enzyme pepsin xav tau rau kev zom cov protein. Lub plab acid qhia rau lub txiav ua kua dej thiab cov enzymes kom zom zaub mov ntxiv