![Dab tsi ntawm digestive system puas muaj nas? Dab tsi ntawm digestive system puas muaj nas?](https://i.answers-medical.com/preview/medical-health/14067124-what-kind-of-digestive-system-does-a-rat-have-j.webp)
Video: Dab tsi ntawm digestive system puas muaj nas?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub plab nas yog lub hnab loj, semilunar zoo li lub hnab nrog cov ntaub ntawv sib xyaw. Ntawm lub plab tau cim cov cim nyiaj txiag, uas tsim lub qhov muag tsis pom lub hnab (saccus cecus). Lub siab nas tau muab faib ua rau lub lobes, tab sis tsis muaj lub zais zis. Intestine ntawm nas tau yooj yim, tab sis ceg muaj lub cev zoo li lub plab.
Hais txog qhov no, nas lub plab zom mov ua haujlwm li cas?
Hauv nas , zoo li hauv txhua qhov tetrapods, muaj kev sib qhia ntawm cov qauv ua ntej ntawm lub plab zom mov thiab ua pa lawv . Thaum noj zaub mov mus rau hauv lub qhov ncauj kab noj hniav hauv qhov ncauj, ua haujlwm, yog ib feem ntawm plab zom mov.
Qhov thib ob, cov nas puas muaj hnyuv loj? Hauv nas thiab lwm yam vertebrates, lub txoj hnyuv loj muaj peb ntu: cecum, nyuv, thiab qhov quav. Lub davhlau ya nyob twg ntawm lub cev yog lub qhov quav, uas nthuav tawm los ntawm sigmoid flexure (ib qho S-puab ib feem ntawm txoj hnyuv) mus rau qhov quav.
Tom qab ntawd, qhov txawv ntawm tus nas thiab tib neeg lub plab zom mov yog dab tsi?
Cov txoj hnyuv ntawm nas , zoo ib yam li tib neeg ib qho, pib ntawm lub qhov ncauj, suav nrog lub pharynx, txoj hlab pas, plab, hnyuv me thiab cov hnyuv loj. Lawv feem ntau raug cais raws li ntu uas lawv koom nrog (nrog rau kev zam ntawm lub qhov ncauj kab noj hniav, qhov twg lawv hu ua cov qog qaub ncaug me me).
Ntev npaum li cas nws thiaj siv nas los zom zaub mov?
Forestomach ntawm nas thiab nas yoog raws txoj kev zom zaub mov ntawm nas thiab nas los ntawm " zaub mov noj nyob rau hauv bulks" mus rau ib tug "steady xeev kev zom zaub mov ”. Nws khaws zoo chewed thiab salivated zaub mov raws li qhov xav tau rau ib mus rau peb teev lossis ntev dua.
Pom zoo:
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Cov zaub mov dhau los ntawm lub plab zom mov raws li hauv qab no: Qhov ncauj. Txoj hlab pas. plab. Cov hnyuv. Colon (cov hnyuv loj) Rectum
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Tib neeg digestive system - muaj cov kwj dej ntev uas muaj xws li lub qhov ncauj, pharynx, oesophagus, plab, hnyuv me, plab hnyuv loj, qhov quav thiab qhov quav. Khoom noj khoom haus hauv tib neeg: digestive kua txiv - zom cov protein rau hauv cov khoom yooj yim. Cov zaub mov hauv plab thaum kawg txav mus rau hauv txoj hnyuv me
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Mechanical digestion pib nyob rau hauv koj lub qhov ncauj nrog zom, ces tsiv mus rau churning nyob rau hauv lub plab thiab segmentation nyob rau hauv cov hnyuv. Peristalsis kuj yog ib feem ntawm kev zom zaub mov
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Cov hnyuv me, txawm tias nws lub npe, yog qhov ntev tshaj plaws ntawm txoj hnyuv. Nws ua haujlwm nrog lwm yam kabmob ntawm lub plab zom mov kom ntxiv zom zaub mov tom qab nws tawm hauv plab thiab nqus cov as-ham
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Tib neeg txoj hnyuv zom zaub mov yog cov kab mob hauv lub cev uas hloov khoom noj mus rau cov khoom noj uas tseem ceeb uas tau nqus mus rau hauv lub cev. Lub plab zom mov kuj tseem txav cov khoom pov tseg tawm ntawm lub cev. Cov enzymes hauv cov qaub ncaug pab zom cov zaub mov, thiab lub zog ua kua qaub qaub ua rau nws yooj yim dua rau cov zaub mov kom nqos