Lub digestive system ntawm cov tsiaj: lub yam ntxwv nta

Cab - yog cov tsiaj uas pub lawv cov tub ntxhais uas muaj mis nyuj. Lawv yog cov feem ntau heev ncaav. Excretory, deev, digestive, ua pa thiab circulatory system ntawm cov tsiaj, cov feem ntau complex qauv nyob rau hauv kev sib piv nrog rau lwm cov systematic units. Tab sis tshwj xeeb mloog yuav tsum tau them rau cov qauv yog tus digestive system.

Khoom noj khoom haus thiab kev zom

Khoom noj khoom haus - ib qho ntawm lub ntsiab nta uas muaj sia nyob. Qhov no txoj kev muaj nyob rau hauv thov mus rau lub cev thiab lawv transformation thiab feem tawm cav ntoo khoom noj khoom haus residues. Nyob rau hauv tshwj xeeb kabmob tshwm sim zom cov zaub mov - splitting complex organic tshuaj (cov nqaijrog, lipids, carbohydrates) rau hauv tej yam yooj yim, uas muaj peev xwm yuav absorbed rau hauv cov ntshav. Yog vim li cas biopolymers rau tawg ua me me mus rau hauv nws cov feem chaw? Lub fact tias lawv molecules yog heev loj thiab muaj peev xwm tsis txeem los ntawm lub digestive channel rau hauv cov ntshav. Lub digestive system ntawm cov tsiaj - yog tsis muaj exception. Nws muaj ib tug xov tooj ntawm cov nta uas qha lawv los ntawm lwm yam chordates.

Tus qauv ntawm lub digestive system nyob rau hauv cov tsiaj

Qhov no system hloov khoom nruab nrog muaj ob qhov chaw: lub channel thiab qog. Tus thawj noj mov yog nqis, cov as-ham yog absorbed rau hauv cov ntshav, thiab nws remnants cav ntoo mus nraum zoov. Alimentary kwj dej muaj xws li cov nram qab no: buccal kab noj hniav, lub caj pas, hlab pas, plab, me me thiab cov loj loj hnyuv, xaus lub qhov quav. Therethrough thiab tshem tawm undigested khib nyiab. Nta ntawm cov qauv ntawm cov digestive system ntawm cov tsiaj yog nyob rau hauv lub xub ntiag ntawm hlau. Qhov no tshwj xeeb kabmob, uas yog enzymes - lom catalysts uas txhawb cov txheej txheem ntawm cleavage ntawm biopolymers.

Nta ntawm kev zom nyob rau hauv lub qhov ncauj

Cov koom haum mammalian digestive system, thiab ntau yeej lub channel pib nrog lub qhov ncauj kab noj hniav. Plhu thiab di ncauj daim ntawv preoral kab noj hniav. Qhov no yog qhov twg lub ob hom ntawm cov zaub mov ua. Neeg kho tshuab nqa tawm los ntawm txoj kev differentiated hniav thiab tus nplaig, tshuaj - enzyme ntawm lub qaub ncaug. Ntawm no lawv muab siab npuab tsuas yog ib hom ntawm cov organic tshuaj - polysaccharides, complex carbohydrates rau tej yam yooj yim suab thaj.

Ntau yam ntawm cov hniav nyob rau hauv lub hom khoom noj khoom haus thiab tus qauv ntawm nws cov ntau lawm. Txhom yog cov feem ntau tsim incisors, rau herbivores yog raug hniav puas tiaj tus zoo, thiab whales hniav uas ploj lawm ntawm tag nrho cov.

Plab zom mov nyob rau hauv lub plab

Bolus ntawm lub qhov ncauj los ntawm cov hlab pas mus rau lub plab yog mus - lub feem ntau txhab ib feem ntawm tag nrho cov channel. Nws npag phab ntsa pib ntsws, thiab cov zaub mov yog mixed. Ntawm no nws yog raug, thiab tshuaj ua. Digestive, circulatory system ntawm cov tsiaj yog zoo txog. Pais plab kua txiv lov cov nqaijrog thiab lipids rau hauv monomers - Cheebtsam. Tsuas yog nyob rau hauv no txoj kev uas lawv tau txais mus rau hauv cov ntshav.

Plab zom mov nyob rau hauv lub gut

Lub digestive system ntawm lub mammalian hnyuv tseem: me me thiab cov loj loj. Cov nqis nyob rau hauv lub plab, khoom noj khoom haus nkag mus rau hauv me me feem ntawm nws thawj thawj pab neeg. Ntawm no yog ib tug zaum kawg plab zom mov thiab haum ntawm tshuaj nyob rau hauv cov ntshav thiab cov qog. Tus thawj ntawm cov hnyuv hu ua lub duodenum. Nws qhib ducts ntawm lub pancreas thiab siab. Hnyuv loj - qhov kawg seem ntawm lub digestive system. Ntawm no feem ntau ntawm cov dej yog yaim thiab tsim quav, reflexively txav deb ntawm lub qhov quav.

digestive caj pas

Lub digestive system ntawm cov tsiaj yog tsiag ntawv los ntawm xub ntiag ntawm hlau. Qhov no yog ib lub cev, uas yog enzymes. Lub qhov ncauj kab noj hniav yog peb cov khub ntawm qaub ncaug. Lawv paim ib tug slimy tshuaj tsis muaj kob. Lub pes tsawg leeg ntawm cov qaub ncaug yog dej, enzymes amylase thiab maltase thiab hnoos qeev mucin. Txhua yam ntawm lawv ua nws txoj kev ua. Dej wets zaub mov lysozyme inactivates kab mob thiab kho wounds, amylase thiab maltase cleaves carbohydrate mucin muaj ib tug shielding nyhuv.

Muaj pes tsawg leeg ntawm pais plab kua txiv xws li hydrochloric acid, hindering putrefactive dab thiab stimulating locomotor kev ua si. Ntxiv tshuaj yog enzymes pepsin thiab lipase, uas yog feem cleaved cov nqaijrog thiab lipids. Hydrochloric acid yog ib tug sib active tshuaj, nws muaj peev xwm corrode lub plab hauv ob sab phlu. Los ntawm no nws ua tiv thaiv lub hnoos qeev (mucin).

Cov txiav secretes digestive kua, enzymes uas muaj trypsin, amylase thiab lipase. Lawv thaum kawg cleaved nrog tej organic tshuaj.

Great thiab lub luag hauj lwm ntawm lub siab. Nws yog lossi tsim bile. Ib zaug nyob rau hauv cov hnyuv, nws emulsifies rog. Lub essence ntawm no yog cov hniav lwj ntawm cov biopolymers rau hauv me me mob. Raws li xws li, lawv sai sai digested thiab absorbed los ntawm lub cev. Ua kom cov enzymes, nce lub cev muaj zog ua si ntawm lub hnyuv, putrefaction nres - nws kuj yog ib tug muaj nuj nqi ntawm lub siab.

Yuav ua li cas yog enzymes

Thiab tam sim no ntau txog qhov xwm thiab mechanism ntawm qhov kev txiav txim ntawm enzymes. Raws li lom catalysts, lawv kom tshuaj. Cov hnyuv tsiaj no yeej tseem zoo cia li ib qhov chaw ntawm kev txiav txim ntawm enzymes.

Pub cwj pwm tsis zoo ntawm cov tsiaj

Ib co tshuaj transformations ntawm cov tshuaj los ntawm lub sij hawm ntawm raug neeg hu ua metabolism. Qhov no yog ib tug tsim nyog mob rau txoj kev loj hlob, kev loj hlob, thiab tsuas yog lub hav zoov ntawm tej sia. Txawv pawg ntawm cov tsiaj nyob rau hauv ntau txoj kev uas yoog mus rau zus tau tej cov zaub mov. Txhom zuj weaker tsiaj. Ua li no, lawv muaj ib tug zoo-tsim cov hniav, uas yog lub incisors thiab canines. Thiab ntau herbivorous thiab carnivorous hom. Ntawm kev txaus siab yog ruminants. Lawv digestive system yog tshwj xeeb yog complex. Lub incisors yog tsis tuaj kiag li los ntawm cov saum toj kawg nkaus, lawv yuav hloov los ntawm ib tug ntoo khaub lig-menyuam cov hniav thiab cov hniav yog underdeveloped. Qhov no qauv ntawm cov hniav uas yuav tsum tau zom nyom - cov pos hniav. Giraffes, nyuj thiab mos lwj - yog raug cov neeg sawv cev ntawm no pab pawg neeg ntawm cov tsiaj. Lawv plab yog muab faib ua plaub qhov. Lawv hu ua cov rumen, reticulum, omasum, abomasum. Nyob rau hauv thawj ob lub chewed zaub mov decomposes rau hauv khoom thiab kua qhov chaw. Cov pos hniav burped los ntawm lub plab rov qab mus rau hauv lub qhov ncauj thiab chewed dua. Ces ua tib zoo ua zaub mov sai li sai tau txais lub thib peb department - cov phau ntawv, thiab ces - nyob rau hauv lub abomasum. Nyob rau hauv no kawg department nws twb raug mus rau qhov kev txiav txim ntawm pais plab kua txiv, thiab thaum kawg phua.

Tsis-ruminant tsiaj xws li tsiaj qus boars, npua thiab hippos yog ib tug yooj yim rau ib leeg-chamber plab thiab digestive system txheem.

Mus lob cov zaub mov, siv ib co tsiaj povtseg. Yog li ntawd, tus ntxhw txo nws hwj cov zaub mov mus rau hauv lub qhov ncauj siv lub pob tw. Thiab puav uas pub rau kua paj ntoo, muaj ib tug flattened lub ntsej muag thiab tus nplaig nyob rau hauv daim ntawv ntawm ib tug txhuam hniav. Ib tug tshwj xeeb ntaus ntawv yog thiab Tshuag zaub mov. Muaj ntau nas cia grain nyob rau hauv lub sab plhu pouches.

Lub digestive system ntawm cov tsiaj muaj ib tug complex qauv, uas yog tshwj xeeb yog nyob rau ntawm qhov xwm ntawm cov zaub mov thiab tsiaj yeej.