Sigmoid m'matumbo: malo, zochitika anatomical

Sigmoid m'matumbo (luso ndi ndani) akuti ndi mmunsi mwa m'matumbo wakupambana mu m'matumbo, chotero, izo nawo m'kati yonyamula ndowe ndi kuwonongedwa anayamba ku thupi.

Choncho, malo a sigmoid m'matumbo ali pafupi ndi kutsegula chapamwamba beseni laling'ono, imatsogoleredwa laterally kuti kumanja kwa krestsu, ndiye akutembenukira kwa kumanzere ndi kufika mzere apakatikati lilowa, komwe pa linkawonongeka lachitatu krestsovogo akudutsa mu rectum. Pankhaniyi, m'litali ranges ku masentimita makumi awiri kuti makumi asanu (zambiri chithunzi ichi ndi lofanana masentimita makumi asanu).

Sigmoid m'matumbo ali kumadalira flexure awiri wakutsikira mafupa a chiuno ndi. Kukula ndi mawonekedwe a zingwe zopota ndi yosiyana ndi zimadalira Kapangidwe ka thupi la munthu, ali pafupi ndi kumanzere ilium, ndipo atsika kuti patsekeke m'chiuno, ndi mmodzi wa iwo akukumana pansi, ndi zina - kumtunda. N'chifukwa chake sigmoid m'matumbo chibadidwe S- zooneka. Nthawi makumi asanu ndi awiri mwa zana kutalika kwa IC kuzungulira zimasiyanasiyana masentimita makumi awiri mphambu zisanu ndi forte faifi, umatchedwa normosigma. Ngati kukula kwake ndi masentimita zosakwana makumi awiri mphambu zisanu, wotchedwa sigmoid m'matumbo brahisigmoy. The m'mimba mwake kunja kwa asanu m'matumbo santmetrov Koma ngati kupyoza kukula izi, izo zikhoza ankanena kuti makoma ake unakhuthala.

SC peritoneum yokutidwa kumbali zonse ndipo ali mesentery, i.e. ndi khola, limene intestine ndi wotetezedwa ku linga m'mimba wa masentimita khumi yaitali, amene amathandiza ndi sayenda kwambiri. khola ili mu dongosolo lake lili mbali ziwiri, utali wa masentimita eyiti, winayo - pa teni. N'chifukwa chake IC ali ndi luso kusamukira ku M'mimbamo m'chiuno, ndipo kumbali kwa m'mimba kapena chiwindi. Dziwani kuti intersects mesentery ureter, yamchiberekero ndi iliac ziwiya ili mu kali mbali komanso lumbar ndi iliac minofu kumanzere sacral olowa. Ndiye iye akusunthira pamwamba pa dipatimenti vertebral krestsovogo ndipo itha pa linkawonongeka lachitatu.

Sigmoid m'matumbo, malo amene amalola kuti kukhudzana ndi intestine yaing'ono kapena spliced nawo adhesions, mwina iwonso angadze ku kukhudzana ndi akuluakulu onse monga m'mimba (kupatula kapamba) komanso M'mimbamo m'chiuno.

Tikumbukenso kuti nthawi zambiri (ngati yaitali mesentery) sigmoid m'matumbo anawamvera mu iliac fossa, kotero muyenera kuti azitha kusiyanitsa izo kwa cecum ndi. Pangani n'kosavuta, basi ayenera kukumbukira kuti akusuntha kuchokera SC njira stuffing kuti sali mu intestine akhungu.

Apanso, timawauza kuti sigmoid m'matumbo, malo amene tafotokozazi, ali zimasintha kafukufuku wakapangidwe kazachilengedwe ndi thunthu, monga iwo zaviyast njira zimene zimachitika mmenemo, komanso thupi la munthu, mbali zaka zake ndi zinthu zina zambiri.

Pa kusintha kwa atsikira m'matumbo sigmoid anati kuchepetsa wa lumen wa, zodabwitsazi amatchedwa sphincter cha Bali. Malowa ali pamtunda pa pamwamba pa iliac fupa ndipo ali ndi kutalika kwa masentimita awiri. Choncho, m'mimba mwake kunja kwa chilonda cha unali kuseri zone wochokera masentimita awiri kapena anayi, ndipo m'dera sfinkernoy - mpaka masentimita awiri.

Komanso malo a sigmoid m'matumbo sfinkera (lumen kuchepetsa) ali pakati, nyumba imeneyi imatchedwa sphincter Myute, koma ikhoza kusunthidwa zina ku likulu lake. Pankhaniyi kunja awiri intestine kwa zone lino wapangidwa masentimita awiri ndi chimodzi, ndipo mu Myute zone - kuchokera limodzi ndi masentimita atatu.

Choncho, tadziwa tsopano osati kokha kumene sigmoid m'matumbo, komanso zochititsa anatomical. Umagwira ntchito yotamandika mu thupi la munthu.