Cecum: lub constructive qauv thiab lub ntsiab muaj nuj nqi nyob rau hauv lub cev

Ua ntej peb yuav tham txog lub luag hauj lwm ntawm lub cecum rau tib neeg lub cev, nws yog tsim nyog los hais nws yog dab tsi. Yog li, lub cecum yog suav tias yog ib tug thawj cov nyuv department xa qhov muag tsis pom lub hnab-zoo li tus feem, qhov ntev ntawm uas nws txawv nyob rau hauv lub cheeb tsam ntawm 3-8 cm Nws yog cylindrical, yam tsawg kawg -. Lub khob hliav qab-zoo li tus qauv npaj. Muaj yog ib tug heev muaj kuab lo lus nug: qhov twg yog qhov muag tsis pom plab? Nws yuav tsum tau clarified tias nws rear phab ntsa fits nruj nreem rau cov nqaij ntshiv ntawm lub plab kab noj hniav (psoas thiab iliacus), zoo li pem hauv ntej phab ntsa, nyob rau hauv lem, yog nyob ib sab mus rau lub anterior mob plab nto. Tsuas yog ib tug hais tias: lub cecum nquag txhawb digestive dab.

Yog hais tias peb tham txog cov tsos ntawm no hom ntawm cov txheej txheem, nws yuav tsum tau hais tias lub cecum yog ncig rau tag nrho cov sab los ntawm peritoneum, thiab muaj cab zoo li lub caij (appendix), uas yog ib qho tseem ceeb feem ntawm lub cev tiv thaiv. Qhov no "lub caij" nyob rau hauv feem ntau ntawm cov kev soj ntsuam cov duab nyob rau hauv txoj cai iliac fossa, tab sis kuj ho ceev nyob rau hauv lub pelvic kab noj hniav. Feem ntau ntawm cov ntawv ntxiv muaj cov mesentery, sib txuas nrog cov dav hlau ntawm lub cecum thiab tej ntawm lub xeem ileum, thiab nws cov kab noj hniav uas muaj cov tshaj lymphoid ntaub so ntswg, nws yog tsis tshua muaj nrov rau kev tiv thaiv.

Nws yuav tsum tau muab sau tseg hais tias nrog lub hnub nyoog, lub cecum ho hloov nws cov tsos. Piv txwv li, nyob rau hauv cov neeg laus nws yog elongated thiab muaj ib tug tsis muaj zog phab ntsa, thiab cov tub ntxhais yog tag nrho cov yav tom ntej, thiab tus "txheej txheem" yog yus muaj los ntawm me me qhov ntev thiab tuab phab ntsa. Nyob rau hauv tas li ntawd, raws li cov tuab, nws muaj taenia caecum thiab haustra, nyob rau ob laus hloov kuj las lub cev vim hais tias lub cev nyob rau hauv cov tub ntxhais lawv qhia ntau kom meej meej tshaj uas ntawm cov neeg laus.

Nws yog ib qho tseem ceeb yuav tau nco ntsoov hais tias cov cecum nyob rau hauv nws cov histological qauv yog tsis sib txawv ntawm cov nyuv phab ntsa, thiab nws cov qog ua kua txoj kev me me folds, nyob rau hauv particular, ob nrov plig plawg zoo li nrog ib tug predominance ntawm nqaij fibers, thiab ib zaug xwb. Tsis tas li ntawd, mucosal yeej Liberkyunovy caj pas thiab Goblet hlwb, thiab hauv qab nws yog tunica submucosa, uas yog sawv cev los ntawm xoob connective ntaub so ntswg, muaj muaj roj thiab cellular lug ntawm tus nqaij fibers.

Hais txog lub sij hawm teem ntawm tus cecum, nws yog tsim nyog los qhia ntxiv hais tias nws yog ncaj qha kev koom tes nyob rau hauv tus txheej txheem ntawm kev zom. Qhia cov functions ntawm lub cecum.

Raws li yog lub npe hu, lub ntsiab suction zom cov zaub mov thiab ntxiv phua ntsiab ncaj qha predominates nyob rau hauv cov hnyuv thiab cecal tseem kav enzymatic plab zom mov, tab sis saturation ntawm xws dab tsis yog li ntawd tseem ceeb.

Twb ncav qhov tseeb hais tias hais txog 3% ntawm carbohydrates thiab proteins nqis thiab absorbed nyob rau hauv cov nyuv thiab cecum yog thiaj tau tuaj lub luag hauj lwm rau qhov haum kua tawm mus rau hauv lub me me hnyuv thaum lub sij hawm ncaj digestion. Kua plab hnyuv txheem nyob rau hauv lub uplink thiab cov cecum yuav thicker, thiab cov transverse nyuv quav diffraction ua ntau compacted taub hau, modifying nyob rau hauv lub distal nyuv nyob rau hauv ib tug ntau ntom. Yog hais tias peb tham txog nws cov indispensability, nws yog tsim nyog los ua kom pom tseeb xim rau lub fact tias ib tug tseem ceeb luag hauj lwm nyob rau hauv tib neeg lub cev cecum tsis ua si, tab sis nws yog indispensable rau hauv lub cev caij - appendix, lymphoid hauv paus uas yog ncaj qha mus muab kev koom tes nyob rau hauv kev ruaj ntseg dab. Tsis muaj lub zem ntau kev kho mob qhov chaw tshaj tawm hais tias cov ntawv ntxiv yog ib yam ntawm cov cia ntawm lub cev.

Nws yog ib qho tseem ceeb yuav tau nco qab hais tias cov cecum, txawm tias nws tsis tseem ceeb txaus qhov ntev, kev kawm mus rau pathological dab, uas feem ntau entail loj cov kab mob.