![Portal systems yog dab tsi? Portal systems yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14145633-what-are-the-portal-systems-j.webp)
Video: Portal systems yog dab tsi?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov portal qhov system (Daim duab 591) suav nrog tag nrho cov hlab ntsha uas tso cov ntshav los ntawm lub plab ntawm lub plab zom mov (tsuas yog qhov qis ntawm qhov quav) thiab los ntawm tus po, pancreas, thiab gallbladder. Los ntawm cov viscera cov ntshav yog xa mus rau lub siab los ntawm lub lub portal cov leeg.
Hais txog qhov no, peb lub portal systems hauv lub cev yog dab tsi?
Portal venous tshuab raug suav hais tias yog venous vim cov hlab ntsha uas koom nrog ob lub txaj capillary yog cov hlab ntsha lossis cov venules. Piv txwv ntawm xws li tshuab suav nrog lub siab portal qhov system , qhov hypophyseal portal qhov system , thiab (hauv cov tsis yog tsiaj) lub raum portal qhov system.
Ib tus kuj tseem yuav nug tau, lub portal venous system yog dab tsi? Cov portal venous system ua haujlwm hais txog cov nkoj uas koom nrog hauv kua ntawm cov hlab ntshav capillary ntawm GI txoj hlab ntshav thiab hnoos qeev rau hauv lub txaj capillary ntawm lub siab. Ntshav ntws mus rau daim siab yog qhov tshwj xeeb uas nws tau txais cov ntshav oxygenated thiab deoxygenated.
Ib yam li ntawd, nws tau nug, lub portal system hauv lub cev yog dab tsi?
Portal system tuaj yeem txhais tau tias yog ib feem ntawm cov kab ke hauv lub cev, uas cov ntshav ntws los ntawm lub txaj capillary ntawm ib lub qauv ntws los ntawm cov hlab ntsha loj los muab lub txaj capillary ntawm lwm cov qauv, ua ntej rov qab mus rau lub plawv.
Lub hepatic portal system ua li cas?
Cov hepatic portal system yog ib txoj hlab ntshav uas nqa ntshav los ntawm cov hlab ntsha ntawm lub plab, txoj hnyuv, tus menyuam, thiab txiav txiav mus rau cov hlab ntshav hauv lub siab. Nws yog ib feem ntawm lub cev pom lawv.
Pom zoo:
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Hauv qhov infundibulum yog tus choj ntawm cov hlab ntsha uas txuas cov hypothalamus mus rau lub caj pas pituitary. Hypothalamic tso tawm thiab txwv tsis pub cov tshuaj hormones taug kev los ntawm thawj lub capillary plexus mus rau cov leeg leeg, uas nqa lawv mus rau hauv lub caj pas pituitary
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Lub hom phiaj ntawm hepatic portal ncig yog xa cov ntshav los ntawm qee qhov ntawm lub plab zom mov mus rau daim siab. Hauv lwm lo lus, cov ntshav tau ntws los ntawm cov plab zom mov (thiab tus hnoos qeev, zais zis, thiab txiav txiav) thiab cov ntshav tom qab ntawd xa mus rau lub siab
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Portal vein thrombosis yog txhaws lossis nqaim ntawm cov hlab ntsha portal (cov hlab ntshav uas nqa ntshav mus rau lub siab los ntawm txoj hnyuv) los ntawm cov ntshav khov. Cov neeg feem coob tsis muaj tsos mob, tab sis hauv qee tus neeg, cov kua dej ntau ntxiv hauv lub plab, tus po tau nthuav dav, thiab/lossis ntshav hnyav tshwm sim hauv txoj hlab pas
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Lienal vein yog ib lo lus qub rau splenic leeg. Cov hlab ntsha portal feem ntau yog tsim los ntawm kev sib txuam ntawm cov leeg mesenteric thiab splenic leeg thiab kuj tau txais cov ntshav los ntawm cov hlab ntsha mesenteric, sab laug thiab sab xis, thiab cov hlab ntsha cystic. Cov xwm txheej cuam tshuam nrog cov leeg leeg ua rau muaj mob loj thiab tuag
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Portal venous systems raug suav hais tias yog venous vim cov hlab ntsha uas koom nrog ob lub capillary beds yog cov leeg lossis cov venules. Piv txwv ntawm cov kab ke no suav nrog cov kab mob hepatic portal, hypophyseal portalsystem, thiab (hauv cov tsiaj tsis yog tsiaj txhu) lub raum portalsystem