Hnyuv: muab tawm rau tag nrho cov zaub mov

Nws yog ntawm no tias lub cev yuav siv sij hawm los ntawm cov zaub mov txhua yam, zoo yuav luag txhua yam. Ntawm no yog ib tug ceev faj thiab txhob txwm tshuaj kev kho mob ntawm ntau yam as-ham. Muaj solved, yuav kis tau yog tias noj mov. Kuv kwv yees li qhov chaw no yog tej yam txawv? Yog, qhov no luag hauj lwm no yog ua si los ntawm cov me me hnyuv nyob rau hauv lub cev.

Tom qab acid thiab machining plab ntawm cov zaub mov, lub tom kawg nkag mus rau hauv me me hnyuv. Thiab cov txheej txheem uas tshwm sim ntawm no - ntau subtle. Ntawm no yog lub cev nyob rau hauv ntau txoj kev, "yog" cov ntshav minerals, Sibhawm, vitamins, carbohydrates thiab, ntawm chav kawm, squirrels. Yog hais tias ib tug neeg yog mob heev nyob rau ib feem ntawm cov hnyuv, lub cev yog ua tau tshaib plab txhua lub sij hawm. Nws yog zoo hais tias xws li mob tsis tshwm sim ntau heev.

Cov hnyuv yog tsis ntev heev. Nyob rau nruab nrab, tsuas 6 meters. Tag nrho cov cheeb tsam ntawm lub raj yog tsis yog li ntawd zoo kawg thiab. Yuav ua li cas kom tau ib lub cev, vim hais tias ntawm no yog koj yuav tsum tau kawm yuav luag txhua yam? Tso zis - tshwj xeeb qauv ntawm cov hnyuv: rau nws saum npoo - ib tug tiag tiag enormous nqi ntawm me me folds, nws zoo heev tsub kom lub zuag qhia tag nrho nto, uas yog ib qho tseem ceeb rau cov haum cov as-ham (raws li zaum hu nws cov as-ham nyob rau hauv general). Tab sis qhov no yog tsis yog txhua txhua. Tseem nyob rau lub puab nto hauv cov hnyuv yog villi. Thiab nyob rau lawv - txawm finer lug - microvilli. Nyob rau hauv lub villi muaj cov hlab ntsha thiab cov qog flasks, nyob rau hauv uas muaj ntau yam as-ham tuaj.

Hlwb meem hauv lub puab nto nruj heev heev rau xuas phua zaub mov molecules. Sibhawm poob mus rau hauv lub lymphatic system, tus so ntawm qhov teeb meem - nyob rau hauv cov ntshav. Ces - nyob rau hauv lub siab, uas regulates zaub mov kom tsawg ntawm qab zib nyob rau hauv cov ntshav.

Nyias tib neeg plab yog tsis ib yam dab tsi tas, nws muaj ib tug phab ntsa qauv ntawm nqaij txheej, tab sis vim hais tias nws tas li tsiv rhythmically. Qhov no yog hu ua peristalsis. Nyob rau hauv kev, nws yog qeeb heev. Thaum zoo li no tshwm sim (thiab cov zoo sib xws txheej txheem rau me me tsis), lub villi yog teev nyob rau hauv tsab ntawv tsa suab, uas kuj yuav tsub kom tus xov tooj ntawm kev sib cuag nrog cov zaub mov molecules. Nyob rau saum npoo ntawm cov hnyuv muaj kev tshwj xeeb ua si nraum zoov - lub crypt, lawv qhib tau ntau yam ntawm me me ntws ntawm digestive qog. Tag nrho cov hnyuv - yog tsim nyog kawg thiab nws yog ib qhov nyuaj koom system. Nws muaj nws tus kheej mechanisms ntawm kev cai, piv txwv li, tej yam tshuaj secreted los ntawm ib cheeb tsam tsim kho lub chaw nyob rau hauv uas cov zaub mov tau txais rau.

Raws li ib feem ntawm cov hnyuv muab faib ua peb seem: thawj, lub duodenum, thiab tib ob, yuag thiab, thirdly, cov ileum. Tam sim ntawd tom qab lub plab cov zaub mov ua heev acidic, uas yuav yog unfavorable rau lwm tus saib xyuas, uas yog tsis nruj heev heev rau xws li ib tug Ph. Yuav ua li cas rau hauv lub cev nyob rau hauv qhov teeb meem no? Ntawm cov hoob kawm, tus highlight alkali. Hais tias yog dab tsi brunnerovy caj pas. Neutralization cov tshuaj tiv thaiv yuav siv sij hawm qhov chaw - thiab lub plab acid tsis ua mob rau sab hauv nyob rau hauv cov hnyuv. Lub jejunum dab ua tau tiav plab zom mov, kev pab nyob rau hauv no phab ntsa enzymes.

Vim li cas cov hnyuv yog hu ua li ntawd, yog dab tsi yog ib lub npe? Tus taw tes nyob rau hauv nws txoj kab uas hla, raws li muab piv nrog rau cov nyuv nws 3-4 cm - ib tug heev coj daim duab. Tuab 3 lub sij hawm wider, tab sis nws yog xws li ib tug qauv tso cai rau lub me me hnyuv mus nqa tawm lawv ilv ua hauj lwm - rau nqus cov as-ham. Twb nyob rau thaum kawg ntawm nws, ileum, lub yam khoom uas yog suab tsis absorbed, tsuas cov kua tsib cov xa rov qab ntawm cov ntshav mus rau lub nplooj siab mus cov plob tsis so tswj phab ntsa. Thiab nyob rau hauv txoj hnyuv loj muaj peev xwm "taus" tej nqi - mus nqus cov dej uas yog kom txaus.

Raws li koj tau pom, hnyuv - nws yog heev yooj yim txheej txheem tso cai, uas txiav txim rau feem ntau cov ncaj noj qab haus huv. Tom qab tag nrho, nws nyob ntawm peb yuav muaj zog, ntse thiab zoo nkauj los yog tsis. Yog li ntawd, peb yuav tsum them sai sai rau lawv noj qab haus huv thiab plob tsis so tswj nyob rau hauv lub sij hawm yuav tsum tau kho, yog hais tias tsim nyog.