Tib neeg digestive system: cov qauv thiab muaj nuj nqi (yees duab)

Qhov loj feem ntawm lub cev yog lub digestive system ntawm ib tug neeg, cov qauv thiab cov kev khiav dej num ntawm uas yog xam tau tias yog heev nthuav lub ntsiab lus. Nyob rau hauv qhov tseeb, nws yog ib qho tseem ceeb kom paub raws nraim li cas mus rau qhov chaw nyob rau hauv peb lub cev muaj tej yam dab. Plab zom mov yog tsis muaj exception. Qhov no yog ib qho tseem ceeb heev txoj kev. Thiab yuav ua li cas nws tshwm sim, nws yuav tsum qhia rau koj nyob rau hauv ntau yam.

terminology

Ua ntej, peb muab ib tug txhais ntawm cov kab lus "cov tib neeg digestive system." Tus qauv thiab muaj nuj nqi yuav tsum ntsia tom qab. Nws yog ib tug ua ke ntawm lub digestive system. Tag nrho cov ntawm lawv muab lub cev nrog rau ntau yam vitamins, tshuaj (nyob rau hauv lwm yam lus, "lub tsev blocks") thiab lub zog. Tag nrho cov no yog qhov tseem ceeb rau tag nrho cov tib neeg hav zoov. Txawm nyob rau ntawm cov nuj nqis ntawm cov ntaub so ntswg thiab hlwb raug txum tim rov thiab tshiab. Qhov no txoj kev tshwm sim rau tag nrho cov sij hawm, raws li tag nrho cov saum toj no nyob rau hauv tus txheej txheem ntawm lub neej puas lawm.

Needless zom cov zaub mov yog ib tug txheej txheem nyob rau hauv uas ib tug tshuaj thiab txhua yam kev kho mob ntawm cov khoom noj khoom haus. Tag nrho kev nkag mus kawm rau hauv lub cev yam khoom uas raug tawg cia rau hauv lawv lub Cheebtsam, ib co kev uas kis los ntawm tus alimentary kwj dej phab ntsa, thiab tus so yog siv kom nkim.

lub plab

Qhov no yog ib qhov tshwj xeeb heev ntawm cov tub ceev xwm. Tag nrho cov qhov ntev ntawm lub channel yog kwv yees li 8-10 hom meters! Qhov no yog ib feem ntawm qhov hloov muaj xws li tus tib neeg digestive system. Tus qauv thiab muaj nuj nqi ntawm lub channel kuj muaj ib tug tshwj xeeb.

Nws thawj tivthaiv - lub qhov ncauj. Sawv daws yeej paub nws yog dab tsi. Cov kab noj hniav muaj muaj qaub ncaug, tus nplaig thiab cov hniav. Qhov ntawd yog qhov chaw uas cov zaub mov yog crushed. Tsis tas li ntawd, vim cov lus receptors neeg pom tau tias lub saj thiab kub ntawm noj cov zaub mov los yog haus dej. Vim cov lus thiab cov qaub ncaug tsim lub thiaj li hu ua zaub mov chunks, uas yog ces xa mus rau lub caj pas. Qhov no, nyob rau hauv lem, funnel-zoo li tus neeg lub cev, uas txuas lub caij ntawm cov hlab pas thiab lub qhov ncauj kab noj hniav. Caj pas pab thawb cov zaub mov, tab sis nws los ntawm ib tug reflex theem.

Cov hlab pas kuj muaj xws li digestive system. Tus qauv thiab nws txoj kev ua yog heev txog. Cov hlab pas yog ib tug ntev 25-cm raj, sab qaum kev ib ntawm uas muaj ib tug striated tej nqaij. Lub sab - los ntawm tus. Thiab tseem ceeb tshaj, cov hlab pas - qhov no yog qhov chaw uas los ntawm lub zaub mov nkag mus rau hauv lub plab.

khoom noj khoom haus cleavage

Cov no yog cov tseem ceeb tshaj plaws yam uas yog tib neeg digestive system. Zog muaj kev tsim nyog. Lub plab yog ib ncua ib feem ntawm hais tias channel. Nws muaj qog uas tsim pais plab kua txiv. Nws yeej txhawb lub ceev ceev so cia khoom noj khoom haus. Qhov no yog lub ntsiab muaj nuj nqi ntawm lub plab - mus zom zaub mov. Tab sis hais tias tsis yog tag nrho cov kabmob uas muaj xws li cov tib neeg digestive system.

Muaj nuj nqi pab khoom noj khoom haus kev zom thiab ua lub siab. Thiab tsis tau lub pancreas. Nws yog ib lub siab ua kua tsib, yuav pab zom zaub mov. Ib tug txiav paim tshwj xeeb enzymes kuj "pab" bile. Lawv ua rau kom lub neej puas carbohydrates, cov rog thiab cov proteins.

Qhov kawg theem ntawm lub digestive txheej txheem

Thiab thaum kawg, cov hnyuv. Yog tsis muaj nws yuav tsis muaj tib neeg digestive system. Tus qauv thiab muaj nuj nqi (duab uas hais nyob rau hauv tsab xov xwm) kuj tshwj xeeb plob tsis so tswj. Firstly, nws kav ntev npaum yog kwv yees li 4 meters. Secondly, nws yog nyob rau hauv cov hnyuv (los yog ntau tshaj precisely, nyob rau hauv lub 12-duodenum) qhib lub gallbladder ducts. Nws yuav tsum tau nco ntsoov hais tias hais tias muaj me me thiab txoj hnyuv loj. Cov ntawm no yog cov ntev ib feem ntawm lub digestive system. Cov hnyuv muaj villi, thiab los ntawm lawv ua haum cov as-ham. Tuab hnoos qeev muaj tshwj xeeb. Tsaug rau nws cais fiber.

Toast hnyuv xaus ntawm lub qhov quav. Nws ua tiav qhov quav. Los ntawm nws thiab tshem tawm los ntawm lub cev undigested zaub mov residue.

zog

Ib tug ntau ntawm ib qho tseem ceeb dab ua tib neeg digestive system. Qauv thiab muaj nuj nqi splanchnology rau tag nrho cov sij hawm ntawm nws lub neej twb tau kawm nyob rau hauv ib co nthuav dav. Qhov no science, precisely ntau, tshwj xeeb nyob rau hauv daim teb no, zaum tau muaj kev tswj kom tsis tsuas muab ib tug ncauj lus kom ntxaws ntsiab txhais ntawm lub system, tab sis kuj yuav npaj ib qho lus. Nyias, nws muaj nqis ntsoov teev, raws li nws tau txiav txim siab mus rau npe rau cov kev ua ntawm lub digestive system.

Yog li ntawd, tag nrho cov peb ntawm lawv. Tus thawj - lub cev muaj zog-phau ntawv no. Raws li yuav twv tau, nws yog meant sib tsoo thiab tom ntej zog ntawm cov zaub mov. Qhov thib ob muaj nuj nqi - secretory. Tag nrho cov kabmob uas ua tau lub cev, ua enzymes, kua txiv hmab thiab kua tsib - tag nrho nws pab thiab accelerates tus ua zaub mov. Thiab thaum kawg, peb - suction. Khoom noj khoom haus kis los ntawm tus digestive system, tawg thiab pab tau cov ntsiab muaj nyob rau hauv nws (minerals, vitamins, proteins uas, etc ...), - nkag mus hauv cov hlab ntsha.

enzymes

Nyob rau qhov no raug rau cov xim yuav tsum hov. Cov tib neeg digestive system (muaj nuj nqi, qauv sib tham saum toj no) - qhov no yog ib tug heev thiab multifaceted ib feem ntawm peb lub cev. Yav tas los, nws twb hais nyob rau hauv dua hais tias nws muaj enzymes uas cuam tshuam rau kev zom zaub mov. Tam sim no wb tham txog cov tshuaj ntau thiab sau lawv tag nrho.

Lub amylase cleaves lub glycogen thiab starch, uas yog tsim nyob rau ntawm maltose. Nws, nyob rau hauv lem, yog ua maltase. Thiab nyob rau thaum xaus ntawm ob zib molecules yog tau. Cov enzymes yuav mus rau cov qaub ncaug.

Kev kawm ntawv tseem ceeb heev tshuaj enzymes

Pepsin thiab chymosin muaj nyob rau hauv lub plab. Nqis cov nqaijrog, tom qab uas lub peptides tsim. Cov txiav muaj trypsin, ua tib cov peptides. Li ntawd, cov amino acids yog tau. Amylase thiab lipase lov nqaijrog thiab cov hmoov txhuv nplej.

Nyob rau hauv lub tsib lub zais zis thiab siab muaj ntsev, uas yog tshuab txais vim digestive enzymes, thiab emulsified rog. Thiab thaum kawg, ib tug ob peb lo lus yuav tsum tau hais txog cov enzymes hauv cov hnyuv. Lawv yog cov muaj ntau: maltase, lactase, phosphatase, sucrase ... Lawv phua ib tug ntau ntawm txawv tshuaj, uas ua nyob rau hauv lub tsim ntawm tseem ceeb heev uas tsim nyog rau lub cev. Qhov no qabzib, fructose thiab dawb lub phosphate.

noj qab haus huv qhov teeb meem

Qhov no yog qhov kawg lub ntsiab lus yuav tsum tau npaum li cas li, sib tham txog dab tsi yog qhov tib neeg digestive system. Anatomy - cov kev kawm, uas nais maum kuaj nyob rau hauv kom meej lub tib neeg lub cev thiab nws cov things. Thiab tus zaum uas cov kws txawj nyob rau hauv daim teb no, qhia tag nrho cov neeg mus saib xyuas lawv kev noj qab nyob. Lub digestive system yog tseem nyob rau hauv kev xav tau ntawm kev kho mob, vim hais tias nws sau tsis tu ncua.

Nws yog ib advisable mus muab kev haus luam yeeb. Txhiab tus tshuaj toxins rau hauv lub cev, Cheb ua plab voos. Nyob rau hauv no hais txog, tej zaum nws yuav tsim gastritis, kub siab thiab ulcers.

Nws tseem ceeb heev tsis txhob ntshai. Thaum ib tug neeg yog nyob rau hauv kev nyuaj siab, cov hnyuv pib khiav qeeb qeeb. Raws li ib tug tsim nyog tau - tsis qab los noj mov, thiab lub cev tsis tau lub tseem ceeb heev as-ham thiab vitamins.

Cawv - txawm no tsis muaj comments yog tsis xav tau. Siab, pancreas, ob lub raum - nws tag nrho cov collapses. Thiab slows metabolism. Cov tib yam tshwm sim vim vas nthiv zaub mov. Qhov no yog ib tug heev zoo khoom noj khoom haus uas inexorably txav peb hnyuv ib ntsuj av.

Sedentary txoj kev ua neej, ntau heev ceev ceev khoom noj khoom haus haum, nqos tag nrho daim ntawm cov teeb meem khoom uas hais tias tsis muaj cov vitamins thiab fiber, thiab fatty, qab ntsev, ntsim, kub, los yog ib yam nkaus thiab cov zaub mov txias - tag nrho cov no kuj adversely muaj feem xyuam rau lub digestive system. Thiab yog hais tias nws yog tsis yooj yim sua kom khiav ntawm nws raws li nws yuav tsum, nws yuav tsum tau tsawg coj noj qab nyob zoo cov khoom noj rau koj noj. Txiv hmab txiv ntoo, khoom noj siv mis, ntxhia dej, zaub - tag nrho cov no yuav pab tau los txhim kho lub plab hnyuv microflora thiab cov metabolism hauv. Thiab ntawm cov hoob kawm, nws yog ib qho tseem ceeb uas tag nrho cov khoom thiab cov tais diav huv si. Tu tseem ceeb heev.