Portocaval anastomosis sezvo kugadzirisa zvinetso uye chirwere ari nhengo

muviri wedu ane kwazvo pfungwa maitiro wokufambisa. Kana matambudziko chero rubatso riparadzirwe iri kushandisa madhipatimendi, izvo zviri kukonzerwa pamberi anastomoses. Uyezve, collaterals izvi dzimwe nguva rinorondedzerwa zvekuchipatara zviratidzo zvimwe zvirwere.

Venous midziyo yevanhu ropa vanokamurwa muzvikwata zvitatu makuru: ezvinhu portal tsinga, yakaderera uye yokumusoro nemhango mutsinga. Mumwe nomumwe mapoka aya anotipa water drainage ropa kubva dzimwe nzvimbo dzomuviri. Pakati pavo, pane vakawanda yeimwe vanonzi portocaval uye Kava caval anastomoses. Naizvozvo, kana mumwe hurongwa harina akadai blockage ari mutsinga, ipapo nokuda pamberi detours venous water drainage anoponeswa.

Zvino kunyatsotarisisa portocaval anastomoses. Ndivo yeimwe ari portal tsinga (ndima porta.) Uye nechepazasi kana huyo mhango venous (ndima cava akaderera, et mukuru.) Uye tine anotevera nzvimbo:

- rezasi yegurokuro. The ropa kubva portal tsinga anopinda mudumbu mutsinga, idzo zvikuru anastomose pamwe esophageal. Esophageal mutsinga, akavapindurawo, ichiyerera munzvimbo unpaired uye hemiazygos mutsinga kuti ichayerera v. cava mukuru;

- mugaranhoko. The water drainage ropa riri kuitwa zvinyorwa zvitatu kubva rokumusoro, pakati uye dzapasi nayo. Ropa runoyerera kubva yokumusoro chikamu kusvika rezasi mesenteric tsinga, pakati - kune womukati iliac uye pakupedzisira kubva pasi - munyaya dzomunyika vasikana (hereinafter munyaya dzomunyika iliac). Sezvingatarisirwa, mu pakukora ari mugaranhoko vari kwakabatana uye kuumba portocaval anastomoses;

- Anterior rusvingo abdominal (akapoteredza achiine rukuvhute mhete). Complex anastomosis, kunobva ndiyo mutsinga vose vatatu hurongwa. Portal tsinga vari achiine rukuvhute tsinga zviri kurongwa nenzira raundi svinga chiropa. Kubva pevane vena cava chokumusoro anastomosis zvaisanganisira epigastrium, asi nekuda muduku vena - nechepazasi epigastrium Vienna;

- itsvo Kamudzira. Munharaunda iyi, mukomboni ari muduku mesenteric tsinga (kubva portal tsinga) uye renal mutsinga (kubva pasi negomba).

Ndinofanira kutaura kuti havasi chete anastomoses portocaval. Pane dzimwe nzvimbo kubatana okumusoro vena cava. yeimwe yakadaro inonzi Kava caval anastomoses. Vatatu vavo:

- Anterior abdominal rusvingo. Kunze anastomosis pamwe portal tsinga, rezasi uye rokumusoro negomba nevakawanda uye chokuita mumwe;

- vertebral plexus. In yokumusoro nomuzongoza tsinga anastomoses pamwe nzvimbo yacho tsinga hurongwa, musoro uye mutsipa negomba pamusoro uye yepazasi chikamu - pamwe lumbar mutsinga ari muduku vena cava. Saka anastomosis achiumbwa kubudikidza vertebral plexus;

- loin. Lumbar cava (muduku vena cava) uye unpaired uye hemiazygos cava (nani vena).

Zvichireva detours chisingarambiki water drainage. Somuenzaniso, muna urwere pakati portal neBP chinhu chinokosha chirwere basa portocaval anastomoses. Chokwadi ndechokuti pamberi chirwere ichi, vakawanda zvekuchipatara kuratidzwa chokuita navo. Pane ari ropa esophageal varices, uyewo kubva mugaranhoko. The klassiske chiratidzo ndiye "muramba musoro". Kunoratidza pachayo pamusoro Anterior abdominal rusvingo uye chinoshanda anastomosing tsinga. Zvose izvi imhaka yokuti nokuda yakawedzera kuomesa ari portal tsinga ropa inoyerera kuburikidza iripo pamakwara ose kwairi. Zvikonzero portal neBP vari chiropa chirwere, akadai cirrhosis, hepatitis, uye dzimwe neoplastic maronda.

Saka, kuvapo anastomoses chinhu chinokosha zvikuru nokushanda kwenhengo dzomuviri. Vatambe inokosha basa zhinji urongwa chirwere, uye vari zvikuru zvakakosha yakazvimirira kwezvaizosarudzwa nedare matambudziko akasiyana-siyana, uye nokuda nechirwere vamwe pathologies.