Ikholoni Sigmoid: indawo, izici yokwakheka

ikholoni Sigmoid (SK) ubhekwa engxenyeni engezansi ikholoni, oludlula phakathi ikholoni, kanjalo-ke uhlanganyela inqubo kokuthutha indle nokuqeda yabo okwalandela nomzimba womuntu.

Ngakho, indawo ikholoni sigmoid kuyinto eduze kuvulwa engenhla indishi esincane, oqondiswe singatsheki ngakwesokudla ukuze krestsu ke uphendukela kwesokunxele bese ukufinyelela umugqa lesemkhatsini liyashona, lapho ngaleso vertebra lwesithathu krestsovogo ludlulele ngaphakathi the ingemuva. Kulokhu, ubude bayo zokhahlamba kusuka amabili kuya ayisikhombisa nanhlanu amasentimitha (ngokuvamile lesi sibalo okulingana ngamasentimitha amane nanhlanu).

Sigmoid ikholoni has kokuhlanganisayo ezimbili flexure ukuthi behlele ukhalo. Usayizi futhi ukuma lezi izihibe ihlukile futhi kuncike Ukuklanywa komzimba womuntu, zingabantu eduze ngakwesobunxele ilium, futhi singaphindi singene ngaphakathi komgodi okhalo, nomunye wabo zibheke phansi, kanye nezinye - phezulu. Yingakho sigmoid ikholoni S- esingokwemvelo okwenyanga. Engamashumi Ayisikhombisa amacala ekhulwini ubude IC iluphu kuhluka amabili nanhlanu kuya amane nanhlanu amasentimitha, ibizwa ngokuthi normosigma. Uma usayizi salo ngamasentimitha esingaphansi amabili nanhlanu, ebizwa ngokuthi brahisigmoy sigmoid ikholoni. Nokho uma esingeqile lokhu Usayizi we ububanzi elingaphandle eziyisithupha ikholoni santmetrov, kungashiwo wagomela ukuthi izindonga zalo uqweqwe.

SC peritoneum ehlanganiswa kuzo zonke izinhlangothi futhi mesentery, isb esibayeni, lapho amathumbu is kuvikelwe odongeni kwamathumbu ngamasentimitha ayishumi nanhlanu ubude, esihlinzeka ngayo ukuhamba okukhulu. Lokhu ngeshumi oyiyo has izingxenye ezimbili, ubude ngamasentimitha ayisishiyagalombili, amanye - ngineminyaka eyishumi. Yingakho IC unekhono ukuhambisa ingaphakathi okhalo, futhi isiqondiso ukuze esiswini noma isibindi. Qaphela ephambana mesentery ureter, izitsha wesibeletho kanye iliac elise ohlangothini evele kanye lumbar futhi iliac imisipha, kwesokunxele ngokuhlanganyela sacral. Wabe lithuthela kobuso umnyango krestsovogo vertebral luphele vertebra lwesithathu.

ikholoni Sigmoid, indawo evumela ukuthi mbeni emathunjini amancane noma spliced nabo ukuvuvukala, zingasebenzisa mbeni konke neziphathimandla njengababusi besisu (ngaphandle amanyikwe) kanye ingaphakathi okhalo.

Kufanele kuqashelwe ukuthi kaningi (uma mesentery eside) sigmoid ikholoni is wathuthela fossa iliac, ngakho kumele akwazi ukuhlukanisa ke kusukela cecum. Yenza akunzima, nje kudingeka sikhumbule ukuthi ukuthuthela kude SC ukugxusha eziqhubekayo abekho izimpumputhe emathunjini.

Nalapha futhi, thina ngigcizelele ukuthi ikholoni sigmoid, indawo elichazwa ngenhla, has morphology iyashintsha kanye anatomy, njengoba zaviyast izinqubo ezenzeka kuwo, kanye nomzimba womuntu, izici zalo yobudala kanye nezinye izinto eziningi.

Ngezinye kwathatha ukwehla ikholoni sigmoid waphawula ukuvaleka mafutha anciphisa isikhala esingaphakathi, lesi simanga ubizwa ngokuthi sphincter ka Bali. Itholakala phezulu ithambo iliac futhi ubude ngamasentimitha amabili. Ngakho, ububanzi elingaphandle isilonda, elitholakala ngemva ukuthi zone ezimbili kuya ngamasentimitha, futhi sfinkernoy endaweni - kuze kube ngamasentimitha amabili.

Futhi indawo sigmoid ikholoni sfinkera (inesikhala ukuvaleka) has phakathi, lesi sakhiwo ubizwa ngokuthi sphincter Myute, kodwa kungenziwa olunye asuswe ukusuka maphakathi nalo. Kulokhu zangaphandle ubukhulu amathumbu salokhu zone yakhiwa ngamasentimitha amabili kuya kwayisithupha, futhi Myute zone - komunye ukuze ngamasentimitha amathathu.

Ngakho, manje sesiyazi ukuthi hhayi kuphela lapho ikholoni sigmoid, kodwa futhi izici zayo yokwakheka. Kufeza indima ebalulekile emzimbeni womuntu.