Kev plab zom nyob rau hauv tib neeg txoj hnyuv

Lub luag hauj lwm ntawm txoj hnyuv me hauv plab yog qhov tseem ceeb heev, nws yuav hais tau, yog qhov kawg theem hauv lub tshuab hluav taws xob rau cov khoom noj khoom haus kawg uas tsim nyog rau peb lub cev.

Cov ntaub ntawv hais txog tib neeg me me

Lub ntsiab theem ntawm plab zom yog xaus rau hauv txoj hnyuv me, uas yog qhov ntev tshaj plaws, nrog ib qhov dej ntawm thaj tsam ze ntawm 200 square meters. Nws yog nyob rau hauv qhov chaw ntawm lub plab hnyuv no uas feem ntau ntawm cov as-ham, nrog rau cov tshuaj lom, co toxins, tshuaj, thiab xenobiotics uas tau noj los ntawm txoj kev hauv qhov ncauj yog absorbed. Ntxiv nrog rau kev zom, kev nqus thiab kev thauj mus los ntawm tag nrho cov yeeb tshuaj no, kev ua haujlwm ntawm hormone secretion thiab tiv thaiv kev tiv thaiv kab mob hauv lub plab hnyuv.

Lub plab hnyuv me muaj 3 lub tuam tsev:

• duodenum;
• jejunum;
• tus nrogum.

Txawm li cas los xij, nyob nruab nrab ntawm ob lub tsev kho mob tsis muaj kev qhia meej meej.

Tag nrho cov seem ntawm cov hnyuv me me lawm thiab muaj plaub leeg:

• mucous membranes;
• submucosal;
• npag;
• serous.

Yuav ua li cas yog plab zom mov hauv cov hnyuv me?

Khoom noj los ntawm lub plab nkag hauv qhov duodenal seem, qhov twg nws yog raug tus kab mob, nrog rau cov kua txiv pancreatic thiab plab hnyuv. Kev zom zaub mov hauv cov tib neeg txoj hnyuv ua haujlwm ntau dua ntawm kev muab cov khoom noj, thiab vim li no nws yog qhov no uas zaum kawg cov plab zom zaub mov noj tau tshwm sim nrog kev pab ntawm plab hnyuv kua txiv, uas muaj peb pawg neeg ntawm cov enzymes. Hauv qhov no, muaj ob hom kev zom zaub mov hauv cov hnyuv me: kab noj hniav thiab parietal. Tsis zoo li striped parietal plab zom mov hauv cov hnyuv me me txog 80% ntawm qhov kawg theem ntawm hydrolysis thiab tib lub sij hawm uas nqus cov khoom siv hauv zaub mov.

Enzymes uas ua los ntawm cov qog ntawm cov hnyuv muaj peev xwm faib tau tsuas yog luv chains ntawm peptides thiab sugars, uas mus rau vim yog qhov ua ntej "ua hauj lwm" nrog cov khoom noj ntawm lwm yam kabmob. Tom qab ua tiav cov khoom noj khoom haus rau hauv qabzib , cov vitamins, amino acids, fatty acids, lwm yam minerals, etc., txheej txheem tseem ceeb ntawm lawv nqus mus rau hauv cov ntshav. Yog li, lub hlwb ntawm tag nrho tib neeg lub cev muaj saturated.

Tseem lub hlwb ntawm cov epithelium ntawm cov hnyuv hauv daim ntawv mesh hu ua "hu ua mesh," uas tsuas yog muab cov khoom sib cais tag nrho xwb yuav kis tau los ntawm, thiab tsis hloov ntawm cov hmoov txhuv nplej siab los yog protein, piv txwv, tsis tuaj yeem txav mus thiab thauj mus ntxiv.