Tib neeg lub nruab nrog zom cov zaub mov

Digestive kabmob ib tug neeg ua ib qho ntawm nws tseem ceeb tshaj plaws physiological zog - noj cov zaub mov, hloov nws mus rau hauv lub zog, tso cov as-ham thiab tso saib lub cev twj. Nco ntsoov tias tag nrho cov kev khiav dej num yog intertwined nrog lub hauj lwm ntawm lwm yam khoom hauv nrog cev systems uas ua hauj lwm ntseeg nkaws. Piv txwv li, nyob rau hauv tus txheej txheem ntawm kev zom kabmob ua si ib tug loj luag hauj lwm ntawm lub circulatory system ntawm tus txiv neej - lawv richly nruab nrog tag nrho cov digestive system. Tom qab tag nrho cov ntshav tau txais khoom noj khoom haus tshuaj thiab yog lawv thoob plaws lub cev.

tib neeg digestive system yuav tsum tau muab faib mus rau hauv ob hom - thawj thiab. Cov yooj yim yog cov neeg ncaj qha txuam nrog kev txais tos, thiab digesting zaub mov ntsoos ntsoos los ntawm lub cev. Koom haum pab yog caj pas (muaj qaub thiab txiav), daim siab, tsib lub zais zis. Cov tib neeg digestive kabmob paim cov enzymes, tsis muaj uas cov kev zom txheej txheem yuav tau tsis yooj yim sua.

Tus qauv ntawm tus tib neeg digestive kabmob no tsis tshua muaj yooj yim, vim hais tias ntawm lawv cov kev khiav dej num. Pib digestive system nrog lub qhov ncauj kab noj hniav - no tshwm sim thawj machining cov hniav thiab cov zaub mov precipitated qaub ncaug. Parotid qaub ncaug tso tawm, sublingual thiab submandibular muaj qaub ncaug. Los ntawm kev siv enzymes, uas yog muaj nyob rau hauv cov qaub ncaug, nqis zaub mov pib twb nyob rau hauv lub qhov ncauj - qhov thiaj li hu ua thawj zaug hydrolysis txheej txheem ntawm digesting carbohydrates. Tom ntej no cov khoom noj khoom haus nkag mus rau lub caj pas, thiab ces mus rau hauv cov hlab pas. Cov hlab pas yog ib tug ntev lub raj uas txuas lub inlet nrog lub plab-gatekeeper nqaij, tiv thaiv cov zaub mov scored rov qab mus rau hauv cov hlab pas. Feem ntau cov cheeb tsam no yog tseem tsis zoo tsim nyob rau hauv cov me nyuam uas ntuav nquag ciav ntawm reflux.

Ib zaug nyob rau hauv lub plab, khoom noj khoom haus kis tau los ntawm cov theem tom ntej ntawm kev zom. Muaj tshwm sim hydrolysis ntawm cov nqaijrog thiab nqaijrog cov. Mus rau kev zom txheej txheem yog qualitatively thiab tag nrho lub plab phab ntsa paim kev cleaving enzymes xws li hydrochloric acid, thiab lwm yam Nyob rau hauv tas li ntawd mus rau lub plab, enzymes yog secreted thiab koom haum pab caj pas - txiav. Tom qab cov zaub mov twb dhau qhov tsim nyog ua nyob rau hauv lub plab, nws kis tau mus rau hauv cov hnyuv.

Hnyuv - lwm lub cev uas digests zaub mov. Lub duodenum tau txais zaub mov ncaj qha los ntawm lub plab, thiab qhov no yog qhov twg lub ib thooj ntawm cov siv cov rog, digestive enzymes ntawm lub gallbladder, cov zaj uas yuav qhib rau hauv lub duodenum.

Hnyuv zaub mov ntxiv lawm, tag nrho cov thaum kho nws chyme - ib tug tshwj xeeb tshuaj. Qhov kawg cleavage kauj ruam tshwm sim digestive tshuaj nyob rau hauv daim nyias nyias ntawm lub me me hnyuv hlwb - enterocytes. Ntawm no nws yog absorbed rau hauv cov ntshav ntawm oligosaccharides, amino acids, monosaccharides, fatty acids. Khoom noj khoom haus residues uas yog tsis muaj peev xwm zom cov, txia mus ua txoj hnyuv loj. Tab sis lub plab zom mov thiab haum nyob rau hauv txoj hnyuv loj tsis muab qhov chaw, tab sis cov khoom noj khoom haus yog lom zem ntau freed los ntawm dej. Maj mam nqis zaub mov puv mus rau hauv cov quav. Thaum lub sij hawm ntawm mus kom ze rau zhomu - tuab ncig leeg buoyancy quav tawm los ntawm lub sphincter - ceeb thawj txo nws hwj siab rau lub plab hnyuv phab ntsa thiab ua rau ib tug kev xav ntawm defecation.

Tib neeg lub nruab nrog zom cov zaub mov - ib qho amazing system, tab sis nyob rau tib lub sij hawm thiab lub feem ntau yooj yim. Txawj tej yam ntxiv binaries nyob ntawm yam khoom noj yog nqis. Tu siab, lub nroog neeg nyob vim hais tias ntawm lawv cov kev ua hauj lwm feem ntau mus rau vas nthiv zaub mov, cua (nyob rau hauv cov nuj nqis ntawm flavors), tab sis kiag li puas thiab tej zaum teeb meem zaub mov. Txawm lub ancient Greeks - tus paub tias sages - hais tias: "Peb - dab tsi peb noj", stressing qhov tseem ceeb ntawm cov zaub mov nyob rau hauv ib tug neeg lub neej. Qhov no yog ib yam dab tsi tsim nyog xav ...