Txoj cai nruj ntawm parietal hlwb xyuas kom meej qhov tso tawm ntawm HCl. H+-K+-ATPase enzyme qhia hauv parietal hlwb tswj kev sib pauv ntawm cytoplasmic H+ rau extracellular K+. H+ zais rau hauv plab lumen los ntawm H+-K+-ATPase ua ke nrog luminal Cl- los tsim gastric acid, HCl.
Vim li cas lub plab zais HCl?
Ncua zaub mov yog thawb koj txoj hlab pas rau hauv koj lub plab. … Thaum cov zaub mov nkag rau hauv koj lub plab, koj lub plab hauv plab tso tawm enzymes uas pib zom cov proteins hauv cov zaub mov. Koj lub plab hauv ob sab phlu kuj secretes hydrochloric acid, uas tsim cov zoo tagnrho rau cov protein-digesting enzymes ua haujlwm.
Dab tsi txhawb nqa parietal hlwb kom zais HCl?
Histamine stimulates parietal cells kom tso HCl.
Dab tsi ua rau parietal hlwb tso HCl?
Hydrochloric Acid Production
pib nrog, water (H2O) thiab carbon dioxide (CO 2) ua ke hauv parietal cell cytoplasm los tsim cov roj carbonic acid (H2CO3), uas yog catalysed los ntawm carbonic anhydrase. Carbonic acid ces spontaneously dissociates rau hauv hydrogen ion (H+) thiab bicarbonate ion (HCO3- ).
HCl ua haujlwm hauv plab hnyuv yog dab tsi?
Ua kom cov kua dej hauv plab
Hydrochloric acid yog ib qhomuaj zog acid secreted los ntawm parietal hlwb, thiab nws txo koj lub plab pH rau ib ncig ntawm 2. Hydrochloric acid hloov pepsinogen rau pepsin thiab lov ntau yam as-ham sib nrug ntawm cov zaub mov koj noj. Nws kuj tua cov kab mob uas tuaj nrog koj cov zaub mov.