Video: Dab tsi yog qhov kev ua haujlwm ntawm txhuam ciam teb nyob rau hauv proximal convoluted tubule?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov txhuam ciam teb thiab qhov ntev ntev ntawm cev tub Ua kom cov cheeb tsam saum npoo av muaj rau reabsorption ntawm cov tshuaj mus rau hauv cov ntshav ua rau ib ncig ntawm 80% ntawm glomerular filtrate yuav tsum reabsorbed nyob rau hauv cov ntu no.
Tsuas yog li ntawd, txoj haujlwm ntawm txhuam ciam teb yog dab tsi?
Cov txhuam ciam teb ntawm txoj hnyuv hauv plab yog qhov chaw ntawm kev zom zaub mov carbohydrate. Microvilli uas yog tus tsim txhuam ciam teb muaj cov enzymes rau qhov kawg ntawm kev zom zaub mov thauj mus rau hauv lawv cov ntshav ntshav apical ua cov protein sib xyaw ua ke.
Tom qab ntawd, lo lus nug yog, dab tsi yog qhov kev ua haujlwm ntawm txhuam ciam teb uas pom nyob rau saum npoo ntawm lub cuboidal epithelial hlwb hauv ob sab phlu ntawm cov tubules sib txuas? Nws yog ua kab nrog yooj yim cuboidal epithelial hlwb uas muaj a txhuam ciam teb , uas nce nto cheeb tsam, ntawm sab apical. Ntxiv mus, lawv kuj muaj cov lej loj ntawm ob qho tib si apical thiab basolateral membrane uas muab loj nto thaj chaw rau thauj cov ions thiab lwm yam tshuaj kom tshwm sim.
Ib yam li ntawd, nws tau nug, dab tsi yog qhov haujlwm ntawm lub tubule ze ze?
Kev nqus. Cov cev tub ua tau zoo tswj hwm pH ntawm cov lim dej los ntawm kev sib pauv hydrogen ions hauv cov interstitium rau bicarbonate ions hauv cov lim dej; nws tseem yog lub luag haujlwm rau zais cov organic acids, xws li creatinine thiab lwm lub hauv paus, rau hauv cov lim dej.
Dab tsi ua rau cov tubules proximal thiab distal convoluted?
A proximal convoluted tubule cov dej lim tawm deb ntawm lub raum lub cev. Ib lub voj ntawm Henle nqis mus rau hauv lub medulla, ua rau ib tug hairpin tig, thiab rov qab mus rau lub cortex. Cov distal convoluted tubule hla ze rau lub cev qub (ntawm lub tshuab juxtaglomerular), tom qab ntawd coj mus rau cov ciav dej sib sau ua ke.
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