Koj puas tuaj yeem ua tiav txoj haujlwm no: "Sau tib neeg lub plab zom mov"? Yog tias koj tsis ntseeg qhov tseeb, peb tsab xov xwm yog rau koj.
Kev faib cov qog
Cov qog yog cov kabmob tshwj xeeb uas zais cov tshuaj lom neeg lom neeg - enzymes. Lawv yog cov khoom siv roj ntsha uas ua kom cov txheej txheem tshuaj lom neeg, tab sis tsis yog ib feem ntawm nws cov khoom. Lawv tseem hu ua secrets.
Qhia qhov txawv ntawm cov qog ntawm sab hauv, sab nraud thiab sib xyaw ua ke. Thawj qhov tso tawm secrets rau hauv cov ntshav. Piv txwv li, lub caj pas pituitary, uas nyob rau hauv lub hauv paus ntawm lub hlwb, synthesizes loj hlob hormone uas tswj cov txheej txheem no. Cov qog adrenal ua rau adrenaline. Cov tshuaj no pab lub cev tiv thaiv cov xwm txheej ntxhov siab, txhawb nqa tag nrho nws lub zog. Lub pancreas yog tov. Nws tsim cov tshuaj hormones uas nkag mus rau hauv cov ntshav thiab ncaj qha mus rau hauv kab noj hniav ntawm cov kab mob hauv nruab nrog cev (tshwj xeeb, plab).
Cov qog nqaij hlav xws li qog nqaij hlav thiab lub siab yog cov qog exocrine. Hauv tib neeg lub cev, lawv kuj suav nrog lacrimal, mis nyuj, hws thiab lwm yam.
tib neeg digestive qog
Cov kab mob no tso tawm cov enzymes uas zom cov organic ua kom yooj yim uas tuaj yeem nqus tau los ntawm lub plab zom mov. Dhau los ntawm cov kab mob, cov proteins tau tawg mus rau hauv cov amino acids, complex carbohydrates rau hauv cov yooj yim sawv daws yuav, lipids rau fatty acids thiab glycerol. Cov txheej txheem no tsis tuaj yeem ua tiav vim kev ua haujlwm ntawm cov khoom noj nrog kev pab ntawm cov hniav. Tsuas yog cov qog nqaij hlav plab tuaj yeem ua qhov no. Cia peb xav txog cov txheej txheem ntawm lawv qhov kev ua kom ntxaws ntxiv.
Sab qaub ncaug
thawj cov qog nqaij hlav ntawm lawv qhov chaw nyob hauv lub cev yog salivary. Ib tug neeg muaj peb khub ntawm lawv: parotid, submandibular, sublingual. Thaum cov zaub mov nkag mus rau hauv lub qhov ncauj kab noj hniav, los yog txawm tias thaum nws pom, qaub ncaug pib ntws mus rau hauv lub qhov ncauj kab noj hniav. Nws yog cov kua uas tsis muaj xim tsis muaj kua nplaum. Nws muaj dej, enzymes thiab mucus - mucin. Cov qaub ncaug muaj cov tshuaj tiv thaiv alkaline me ntsis. Lub enzyme lysozyme muaj peev xwm neutralize cov kab mob thiab kho qhov txhab ntawm qhov ncauj mucosa. Amylase thiab m altase rhuav tshem cov carbohydrates yooj yim. Qhov no yog ib qho yooj yim los xyuas. Muab ib daim khob cij tso rau hauv koj lub qhov ncauj, thiab tom qab ib lub sij hawm luv luv nws yuav tig mus rau hauv ib qho crumb uas tuaj yeem nqos tau yooj yim. Mucus (mucin) coats thiab moisturizes cov khoom noj.
Cov zaub mov uas zom thiab zom ib nrab yog thauj los ntawm txoj hlab pas los ntawm lub pharynx mus rau lub plab, qhov uas nws nthuav tawm ntxiv.
Cov kab mob hauv plab
Nyob hauv ntauCov qog ntawm cov mucous daim nyias nyias ntawm nthuav ib feem ntawm lub plab zom mov secrete ib tug tshwj xeeb tshuaj rau hauv nws cov kab noj hniav - gastric kua txiv. Nws kuj yog cov kua ntshiab, tab sis nrog ib puag ncig acidic. Cov kua txiv hmab txiv ntoo muaj xws li mucin, enzymes amylase thiab m altase, uas zom cov proteins thiab lipids, thiab hydrochloric acid. Lub tom kawg txhawb lub cev muaj zog ntawm lub plab, neutralizes cov kab mob pathogenic, thiab nres cov txheej txheem putrefactive.
Cov zaub mov txawv nyob hauv tib neeg lub plab rau lub sijhawm. Carbohydrate - txog plaub teev, protein thiab rog - los ntawm rau rau yim. Cov kua dej tsis nyob hauv plab, tsuas yog cov mis nyuj, uas hloov mus ua curd ntawm no.
YPancreas
Ntawm no yog lub caj pas digestive nkaus xwb. Nws nyob hauv qab plab, uas txiav txim siab nws lub npe. Nws secretes digestive kua txiv rau hauv duodenum. Qhov no yog qhov tso tawm sab nraud ntawm tus txiav. Nws tso cov tshuaj hormones insulin thiab glucagon ncaj qha rau hauv cov ntshav, uas tswj cov metabolism hauv carbohydrate hauv tib neeg lub cev. Hauv qhov no, lub cev ua haujlwm raws li cov qog endocrine.
siab
Cov qog digestive kuj ua haujlwm zais cia, tiv thaiv, hluavtaws thiab metabolic. Thiab nws yog tag nrho ua tsaug rau lub siab. Nws yog lub caj pas digestive loj tshaj plaws. Cov kua tsib tas li tsim nyob rau hauv nws cov ducts. Nws yog ib tug iab ntsuab-daj kua. Nws muaj dej, kua tsib acids thiab lawv cov ntsev, nrog rau cov enzymes. Lub siab secretes nws zais cia rau hauv duodenum, nyob rau hauv uasmuaj kev sib cais zaum kawg (emulsification) ntawm cov rog thiab tshuaj tua kab mob ntawm cov tshuaj phem rau lub cev.
Txij li thaum kev tawg ntawm polysaccharides pib nyob rau hauv lub qhov ncauj, cov zaub mov carbohydrate yog qhov yooj yim digestible. Txawm li cas los xij, txhua tus tuaj yeem lees paub tias tom qab zaub zaub xam lav, qhov kev xav ntawm kev tshaib kev nqhis tuaj sai heev. Nutritionists qhia txog kev noj zaub mov protein. Nws yog qhov muaj txiaj ntsig zoo dua, thiab cov txheej txheem ntawm nws txoj kev sib cais thiab kev zom zaub mov yuav siv sijhawm ntev dua. Nco ntsoov tias kev noj haus yuav tsum sib npaug.
Tam sim no koj tuaj yeem sau cov qog nqaij hlav? Koj puas tuaj yeem sau npe rau lawv cov haujlwm? Peb xav li ntawd.
