Digestive qog: qauv thiab muaj nuj nqi

Koj yuav tau ua xws li ib tug neeg ua hauj lwm: "Sau tus digestive caj pas ntawm tus txiv neej"? Yog hais tias nyob rau hauv tsis ntseeg txog lub caij nyoog lo lus teb, ces peb tsab xov xwm no yog rau koj.

kev faib qog

Lub qog yog tshwj xeeb kabmob uas paim biologically active tshuaj - enzymes. Lawv yog cov lom catalysts uas ceev li tus txheej txheem ntawm kev tshua tshuaj, tab sis yog tsis muaj nyob rau hauv nyob tus yeees ntawm cov khoom. Lawv kuj hu ua secrets.

Paub qhov txawv caj pas nrog, sab nraud thiab mixed secretion. Tus thawj tso tawm nyob rau hauv cov ntshav secrets. Piv txwv li, lub pituitary caj pas, uas yog nyob rau hauv lub hauv paus ntawm lub hlwb, synthesises txoj kev loj hlob lawm, uas regulates qhov txheej txheem. Thiab cov qog adrenal paim adrenaline. Qhov no tshuaj yuav pab rau lub cev deal nrog stressful lub sijhawm los hloov tag nrho nws cov rog. Cov txiav yog ib tug tov. Nws ua cov tshuaj hormones uas tau raug qhia nyob rau hauv cov ntshav thiab ncaj qha mus rau hauv cov kab noj hniav ntawm cov hauv nruab nrog cev (nyob rau hauv particular, lub plab).

Digestive qog xws li muaj qaub thiab siab, yog exocrine qog. Nyob rau hauv tib neeg, lawv kuj muaj xws li tsim kua muag, mis nyuj, hws thiab lwm tus neeg.

Cov tib neeg digestive caj pas

Cov kabmob paim enzymes uas ua txhaum down complex cov ntaub ntawv organic rau hauv yooj yim, uas muaj peev xwm yuav absorbed los ntawm lub digestive system. Dhau los ntawm lub huam, proteins uas tawg down rau amino acids, complex carbohydrates - mus yooj yim lipids - mus fatty acids thiab glycerol. Qhov no txoj kev muaj peev xwm tsis muab los siv los ntawm cov neeg kho tshuab ua khoom noj khoom haus los ntawm txoj kev ntawm cov hniav. Nws muaj peev xwm tsuas ua tau lub digestive qog. Xav txog cov mechanism ntawm lawv txiav txim ntau.

qaub ncaug

Thawj digestive caj pas ntawm qhov chaw ntawm txoj kev - ib tug muaj qaub. Nyob rau hauv tib neeg, muaj peb cov niam txiv: tus parotid, submandibular, sublingual. Tom qab kev sib cuag nrog cov zaub mov nyob rau hauv lub qhov ncauj kab noj hniav los yog txawm tias thaum nws yog nyob rau hauv daim ntawv ntawm cov ncauj kab noj hniav pib salivate. Nws yog ib tug tsis muaj kob kua muco-nplaum. Nws yog tsim los ntawm cov dej, enzymes thiab hnoos qeev - mucin. Qaub ncaug muaj ib tug me ntsis alkaline ras txog. Lub enzyme lysozyme yog tau neutralize pathogens thiab yuav kho tsis tau lub qhov txhab ntawm lub qhov ncauj mucosa. Amylase thiab maltase nqis nrog complex carbohydrates rau hauv yooj yim. Nws yog ib qho yooj yim mus xyuas. Muab tso rau hauv lub qhov ncauj daim ntawm qhob cij, thiab tom qab ib tug luv luv lub sij hawm nws yuav tig mus rau hauv ib tug ib qho kuam me me uas yog ib qho yooj yim mus nqos. Hnoos qeev (mucin) tsho tiv no thiab moisturizes rau daim ntawm cov khoom noj.

Chewed thiab cov cais cov khoom noj ntawm caj pas txiav los ntawm cov hlab pas nkag mus rau lub plab, qhov twg nws undergoes ntxiv raug.

Digestive qog ntawm lub plab

Nyob rau hauv lub feem ntau ncua ib feem ntawm cov hnyuv mucosa qog paim nyob rau hauv nws cov kab noj hniav ib tug tshwj xeeb muaj - cov pais plab kua txiv. Nws tseem yog cov kua ntshiab ntshiab, tab sis nrog ib tug acidic nruab nrab. Muaj pes tsawg leeg muaj xws li pais plab mucin, amylase thiab maltase enzymes uas muab siab npuab cov nqaijrog thiab lipids, thiab hydrochloric acid. Cov yav tas nkoos lub cev muaj zog ua si ntawm lub plab, neutralizes teeb meem kab mob, tsis putrefaction.

Txawv cov zaub mov yog nyob rau hauv tus tib neeg lub plab lub sij hawm. Carbohydrate - txog li plaub teev, protein thiab muaj roj - los ntawm rau mus rau yim. Kua tsis nyob twj ywm nyob rau hauv lub plab, nyob rau hauv tas li ntawd mus rau mis nyuj, uas yog hloov ntawm no mus rau hauv curds.

txiav

Qhov no yog qhov digestive caj pas, uas yog mixed. Nws yog nyob qab lub plab, uas tau nyob rau hauv nws lub npe. Nyob rau hauv lub duodenum nws ua digestive juices. Qhov no yog qhov exocrine txiav. Ncaj qha mus rau hauv cov ntshav nws secretes lub hormones insulin thiab glucagon uas tswj carbohydrate metabolism hauv tib neeg lub cev. Nyob rau hauv cov ntaub ntawv no, lub cev ua haujlwm li ib tug endocrine caj pas.

siab

Digestive caj pas secretory kuj khiav lag luam, kev tiv thaiv, kev pauv thiab hluavtaws muaj nuj nqi. Thiab tag nrho cov no ua tsaug rau lub siab. Nws yog cov coob digestive caj pas. Nws yog lossi tsim ducts bile. Nws yog ib tug iab kua greenish-daj xim. Nws muaj dej, cov kua tsib acids thiab lawv ntsev, raws li zoo raws li enzymes. Nws tsis pub leejtwg paub siab secretes mus rau hauv lub duodenum, nyob rau hauv uas qhov kawg cleavage (emulsification) rog kom tsawg thiab tua kab mob tshuaj teeb meem rau tus kab mob.

Raws li cleavage polysaccharides pib nyob rau hauv qhov ncauj carbohydrate zaub mov nws yog lub feem ntau digestible. Txawm li cas los, ib tug yuav paub tseeb tias tom qab ib tug zaub nyias kev tshaib kev nqhis los sai sai heev. Nutritionists qhia kom haus protein cov khoom noj. Nws yog energetically ntau nqi, thiab cov txheej txheem ntawm splitting thiab kev zom kav ntev npaum li cas. Nco ntsoov hais tias cov khoom noj khoom haus yuav tsum tau yuav balanced.

Thiab tam sim no koj sau cov digestive caj pas? Hu rau lawv zog? Kuv xav li ntawd.