![Dab tsi ua lub luag haujlwm hauv cov zis concentration? Dab tsi ua lub luag haujlwm hauv cov zis concentration?](https://i.answers-medical.com/preview/medical-health/14076277-what-plays-a-role-in-urine-concentration-j.webp)
Video: Dab tsi ua lub luag haujlwm hauv cov zis concentration?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov zis concentration yog ib txoj haujlwm ntawm juxtamedullary nephrons nrog ntev loops ntawm Henle uas nkag mus tob rau hauv lub raum medulla. Lawv tiv thaiv dissipation ntawm medullary osmotic gradient los ntawm tus txheej txheem hu ua countercurrent exchange (saib Lub luag haujlwm ntawm Vasa Recta hauv qab no).
Ib yam li ntawd ib tug yuav nug, tus qauv twg yog qhov tseem ceeb tshaj plaws rau cov zis concentration?
Raws li twb tau hais lawm, lub voj ntawm Henle yog qhov tseem ceeb rau lub peev xwm ntawm lub raum kom mloog zoo zis . Lub siab siab ntawm ntsev hauv cov kua nruab nrab hauv nruab nrab yog ntseeg kom ua tiav hauv lub voj los ntawm cov txheej txheem hu ua kev sib pauv sib npaug sib npaug.
Qhov thib ob, vim li cas nws thiaj tseem ceeb rau kev tso zis? Lub luag haujlwm tseem ceeb ntawm urea hauv lub Cov zis - Nco ntsoov Mechanism. Muaj peev xwm tsim tau mloog zoo los yog dilute zis tso cai rau tib neeg sib txawv ntawm cov dej tso tawm kom haum rau kev haus dej, yog li tswj hwm cov ntshav plasma osmolality yuav luag tas li.
Ib tug kuj yuav nug, dab tsi txiav txim siab tso zis?
Ntau concentrated zis txhais tau hais tias muaj cov kua dej ntau dua thiab cov dej tsawg dua hauv cov qauv. Solutes yog yaj hais, xws li qab zib, ntsev, thiab cov proteins. Txawm li cas los xij, feem ntau, koj zis yog ntsuas hauv lub ntiajteb txawj nqus - qhov piv ntawm qhov ceev ntawm koj zis mus rau qhov ntom ntawm dej (1.000).
Dab tsi yog qhov mechanism ntawm lub raum concentration ntawm cov zis?
Thaum muaj dej tsis txaus hauv lub cev, tus raum tsim kom muaj concentrated zis los ntawm kev txuas ntxiv mus rau excrete solutes thaum nce dej reabsorption thiab txo qhov ntim ntawm zis tsim. Tib neeg raum tuaj yeem tsim qhov siab tshaj plaws cov zis concentration ntawm 1200 txog 1400 mOsm / L, plaub mus rau tsib zaug osmolarity ntawm cov ntshav.
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Raws li ib feem ntawm pab pawg, tus kws kho mob lub plawv tsis ua haujlwm tau zoo muab rau muab kev pabcuam rau cov neeg mob thoob plaws txoj kev mob plawv tsis ua haujlwm thiab qhov no yuav tsum muaj kev koom tes ze nrog kws saib xyuas mob hauv thaj chaw tshwj xeeb tshwj xeeb xws li chav kho mob xwm txheej ceev thiab kev kho mob dav/ saib xyuas-ntawm-tus-neeg laus