Cov txheej txheem:
Video: Dab tsi enzyme tsim bicarbonate hauv pancreas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Bicarbonate thiab Dej
Lub hauv paus mechanism bicarbonate hmoov Kev zais zis yog qhov tseem ceeb tib yam li rau cov kua qaub los ntawm cov cell parietal hauv plab thiab yog nyob ntawm enzyme carbonic anhydrase. Hauv txiav cev du,. bicarbonate hmoov yog secreted rau hauv lub lumen ntawm lub duct thiab li no mus rau hauv txiav kua txiv.
Tsis tas li ntawd, dab tsi txhawb nqa bicarbonate secretion los ntawm pancreas?
Secretin yog zais (!) nyob rau hauv cov lus teb rau cov kua qaub nyob hauv duodenum, uas tau tshwm sim thaum acid-laden chyme los ntawm lub plab ntws los ntawm pylorus. Cov txiaj ntsig tseem ceeb ntawm secretin ntawm tus pancreas yog to txhawb cev cev zais dej thiab bicarbonate hmoov.
Qhov thib ob, vim li cas tus txiav txiav tawm bicarbonate rau hauv duodenum? Nyob rau hauv lub duodenum ntim siab ntawm bicarbonate hmoov tso tawm neutralizes acidity ntawm lub plab chyme, thaum txiav enzymes catabolize cov zaub mov zom zom rau hauv molecules uas yog yooj yim absorbed los ntawm plab hnyuv enterocytes.
Kuj nug, cov zom zaub mov dab tsi yog tsim los ntawm tus txiav?
Cov enzymes tsim los ntawm pancreas muaj xws li:
- Pancreatic proteases (xws li trypsin thiab chymotrypsin) - uas pab zom cov protein.
- Pancreatic amylase - uas pab zom cov suab thaj (carbohydrates).
- Pancreatic lipase - uas pab zom cov rog.
Puas yog pancreas secrete sodium bicarbonate?
Cov acini tsim tawm digestive enzymes. Cov islets tsim tawm cov tshuaj hormones. Cov pancreas secretes digestive enzymes rau hauv duodenum thiab cov tshuaj hormones rau hauv cov hlab ntsha. Cov pancreas thiab zais cia loj npaum li cas sodium bicarbonate hmoov , uas tiv thaiv duodenum los ntawm neutralizing acid uas los ntawm lub plab.
Pom zoo:
Hom enzyme twg yog tsim tawm hauv plab?
Cov protein zom zom enzyme pepsin tau qhib los ntawm kev cuam tshuam nrog hydrochloric acid hauv plab. Thawj lub hlwb, tseem pom nyob hauv lub plab ntawm lub plab, tsim ob lub zom zaub mov: pepsinogen thiab gastric lipase. Pepsinogen yog cov txheej txheem ua ntej ntawm cov protein muaj zog-zom cov enzyme pepsin
Cov kauj ruam uas raug thiab muaj kev nyab xeeb tshaj plaws hauv kev cawm tus neeg raug tsim txom uas poob dej hauv dej yog dab tsi?
Nyob Nyab Xeeb. Nyob Nyab Xeeb. Yog tias muaj ntau dua ib tus neeg cawm neeg, muaj ib tus neeg hu rau 911 tam sim ntawd. Yog tias tus neeg mob paub zoo, sim mus cuag tus neeg mob nrog qee yam nruj txaus kom rub nws rov qab. Yog tias tsis muaj dab tsi yuav ncav cuag tau, pov tus neeg mob kom hlua thiab txhawb kom nws mus
Cov kab mob hauv qhov ncauj dab tsi metabolize sucrose tsim cov nplaum glucans thiab tsim cov quav hniav?
GTF yog qhov tseem ceeb enzyme uas catalyzes sucrose rau nplaum glucans thiab pab txhawb kev tsim cov hniav plaque nyob rau hauv uas lub tsub zuj zuj ntawm metabolic acids uas ua los ntawm cov kab mob colonies ua rau lub zos demineralization ntawm cov enamel nto (Loesche, 1986)
Dab tsi enzyme ua H pylori tsim?
Urease yog qhov tseem ceeb tshaj plaws enzyme tsim los ntawm H. pylori, txij li nws ua rau muaj sia nyob ntawm cov kab mob hauv qhov chaw qis-pH, thiab tseem pab txoj hnyuv ntawm lub plab mucosa. Cov enzyme catalyses qhov kev puas tsuaj ntawm urea rau ammonia thiab carbon dioxide
Dab tsi yog lub hauv paus ntsiab lus hauv kev tsim?
Cov ntsiab lus tseem ceeb yog thaj chaw ntawm kev txaus siab, qhov tseem ceeb lossis qhov sib txawv hauv qhov muaj pes tsawg leeg uas ntes thiab tuav tus neeg saib xyuas. Cov ntsiab lus focal hauv koj tus qauv tsim yuav tsum sawv tab sis yuav tsum tau pom tom qab lub hauv paus nrog qhov tseem ceeb tshaj plaws