Digestive kabmob: split thiab kawm

Plab zom mov - ib tug txheej txheem uas peb muaj tsis nco qab li, yog koom nyob rau hauv tus kab mob nyob rau hauv reflex theem. Qhov no tus txheej txheem yog nyuab, yog li ntawd tsim nyog nug inquisitive neeg, "Yuav ua li cas yog zom cov zaub mov?". Ntawm tus taw tes ntawm view ntawm tus kws kho mob, nws yog khoom noj ua, lub cev thiab tshuaj. Raws li ib tug tshwm sim, nws yuav tau haum ntawm tshuaj, raws li zoo raws li tshem cov khoom pov tseg.

digestive kabmob - hais tias hollow kabmob, hlau ntxiv, uas pab zom cov tshuaj bonds nyob rau hauv cov ntaub ntawv. Piv txwv li, qos yaj ywm mov carbohydrates thiab carbohydrates muaj nyob rau hauv daim ntawv ntawm starch, lawv yuav kawm tsis tau kom txog thaum lub hmoov txhuv nplej molecules raug tawg cia rau piam thaj. Nqaij protein kuj nws tus kheej tsis tau assimilate - yuav tsum tau nthuav mus rau lub Cheebtsam - amino acids (los ntawm uas lub cev muaj peev xwm tsim nws tus kheej protein). Sibhawm per se tej zaum yuav tsis nyob rau hauv lub cev ntawm qhov nruab nrab - tsuas yog tom qab therefrom los ntawm kev zom yog tau fatty acids thiab glycerin.

Digestive Physiology yog tias cov tshuaj uas, thaum sab hauv lub cev, tsis nyob rau hauv lub cev ib puag ncig. Ua li no, lawv yuav tsum yauv mus ua ntau transformations. Thiab ces nws tshwm sim los ntawm nyias mucosal haum. Haus kuj muaj xws li daim siab, muaj qaub caj pas , thiab txiav. Nyob rau hauv tas li ntawd, nyob rau hauv lub phab ntsa ntawm lub digestive kabmob muaj qog uas tsim tus tsim nyog tshuaj rau digestion. Tag nrho cov phab ntsa yog them nrog hnoos qeev, yog li kom txhob muaj qhov tshwm sim rau rau kom raug mob lub me plhaub.

Mechanically zaub mov kho hniav, ces nws yog tov nrog qaub ncaug. Qaub ncaug yog peb cov khub uas loj qog thiab ntau me me uas sawv daws yuav. Nyob rau hauv no kua Cheebtsam yog organic, mineral tshuaj thiab decomposition khoom ntawm leukocytes. Tab sis lub tseem ceeb tshaj plaws - nws muaj ob enzymes - ptyalin (so cia cov hmoov txhuv nplej) thiab maltase (splits qab zib rye, barley, thiab lwm yam). Los ntawm lub qhov ncauj ntawm lub caj pas cov zaub mov nkag mus rau hauv txoj hlab nqos mov.

Txoj hlab nqos mov - lub raj uas yuav tsum tau hu ua ib tug ncaj kab ncaj nraim. Nws yog them nrog multilayered squamous epithelium. Cov hlwb yog lossi tau tshiab, vim hais tias lawv yog heev yooj yim mus raug mob. Fission tshwm sim nyob rau hauv lub sib sib zog nqus khaubncaws sab nraud povtseg, thaum lub sij hawm sab nraud exfoliated thiab cia rau hauv lub plab nrog cov zaub mov. Lub submucosa muaj ib tug me me npaum li cas ntawm kev mob - cancer ntawm cov hlab pas. Nyob ib ncig ntawm lub plab, lawv yuav zoo nyob rau hauv tej khoom rau sawv ntawm lub plab, lawv ua tim lub npe ntawm tus mob caj pas. Thaum pib ntawm cov hlab pas heev ntawm striated nqaij, tab sis nyob rau hauv lub qis peb tsuas muaj tus nqaij fibers. nqos txheej txheem pib consciously, tab sis, ces switched reflex teb. Tom qab esophageal noj mov deal digestive kabmob xws li hauv lub plab thiab cov hnyuv.

Mob plab hauj lwm raws li ib qho zoo heev tov khoom vim nqaij txoj kev loj hlob. Nyob rau hauv lub cev pib cov nqaijrog cleavage siv pepsin enzyme, cov kab mob raug tua hydrochloric acid. Raws li ib tug tshwm sim ntawm kev zom rau hauv lub plab puv semi-kua txheem tusyees tws - chyme. Los ntawm nws yog absorbed nyob rau hauv tib lub qhov chaw ib co ntsev dej, haus dej cawv, ib co tshuaj. Lub plab ua molecules antianemic tau.

Yog cov zaub mov nkag mus rau hauv me me hnyuv. Qhov ntev ntawm nws - ib tug nruab nrab ntawm rau meters. Tus thawj 30 cm - lub duodenum. Nws yog txuas mus rau lub nyob ib sab nruab nrog cev thiab mus taug kev nyob ib ncig ntawm lub taub hau ntawm lub pancreas. Ces hais kom lean, thiab ces tus ileum. Nyob rau hauv cov hnyuv sau zom cov zaub mov thiab xaiv cov khoom ntawm kev zom yog absorbed rau hauv cov ntshav thiab cov qog. Nyob rau hauv cov hnyuv muaj kev kawm tshwj xeeb - lub villi, uas zoo heev ua rau kom cov suction cheeb tsam. Nyob rau hauv cov hnyuv khiav ducts ntawm lub siab (cov kua tsib) thiab txiav. Raws li ib tug tshwm sim, nws yog thaum kawg digested thiab absorbed carbohydrates, cov rog thiab cov proteins. Thiab rog tuaj ncaj qha mus rau hauv lub qog, uas ces txuas mus rau cov ntshav.

Cov hnyuv loj zom cov zaub mov seem kom tiav, tiam sis "rau nws tus kheej" putrid kab mob. Absorbed dej, thiab khoom noj khoom haus cov khib nyiab kis tau lub taub hau ntawm faeces. Nyob rau hauv lub kawg seem, qhov quav twj tos tau muab tshem tawm nyob rau hauv tus txheej txheem ntawm defecation. Yog li xaus tus txheej txheem ntawm kev zom. Nws yog ib qho tseem ceeb tag nrho cov digestive kabmob, tab sis lawv cov hauj lwm ua ke ua hauj lwm yuav pab tau lub cev hlwb zog los ntawm lub xub ntiag ntawm lub tsev ntaub rau lub hlwb.