Video: Yuav ua li cas urea concentrated hauv cov lim?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
yog reabsorbed los ntawm kev thauj mus los ntawm lim mus rau cov ntaub so ntswg. Tom qab ntawd lawv kis mus rau hauv cov ntshav capillaries. Txij li qhov no yog txheej txheem passive, urea ua diffuses nws siab gradient kom txog rau thaum cov concentration ntawm urea ua hauv lim thiab ntshav sib npaug.
Tsis tas li ntawd, vim li cas urea thiaj li tso zis ntau ntxiv?
Ntxiv rau ua urea lub luag haujlwm hauv tso zis mloog zoo mechanism, urea ua yog lub hauv paus loj rau kev tshem tawm cov nitrogen pov tseg thiab ntau ntau ntawm urea ua yuav tsum tau tso tawm txhua hnub. Lub raum muaj peev xwm ua mloog zoo rau urea txo qhov xav tau kom tshem tawm cov dej yooj yim kom tso cov nitrogen pov tseg.
Qhov thib ob, ultrafiltration ua cov glomerular filtrate li cas? Ultrafiltration tshwm sim hauv glomerulus thiab cov glomerular pom (GF) dhau mus rau hauv Bowmans capsule. Siab siab yog tsim los ntawm cov hlab ntshav uas siv ntshav mus rau hauv glomerulus (afferent arteriole) ua dav dua li cov hlab ntshav uas siv ntshav tawm ntawm glomerulus (cov hlab ntsha tawg).
Ib yam li ntawd, lub raum lim urea li cas?
Cov ob lub raum tshem tawm urea ua los ntawm cov ntshav los ntawm me me lim units hu ua nephrons. Urea , ua ke nrog dej thiab lwm yam khoom pov tseg, ua cov zis thaum nws hla cov nephrons thiab nqes mus lub raum tubules ua raum . Los ntawm ob lub raum , cov zis nkag mus rau ob lub raj nyias hu ua ureters mus rau lub zais zis.
Vim li cas cov concentration ntawm urea nce hauv nephron?
Reabsorption cov dej nyob ib ncig ntawm nephron yog li ua rau a sawv u tub concentration ntawm urea . Cov urea ua reabsorbed nce cov medullary siab ntawm qhov kev daws teeb meem, uas yog tseem ceeb heev rau kev rov nqus dej los ntawm qhov sab hauv sab hauv nruab nrab ntawm qhov nqes nqes ntawm lub voj ntawm Henle.
Pom zoo:
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