Qhov sib txawv tseem ceeb ntawm ultrafiltration thiab xaiv reabsorption yog tias ultrafiltration yog cov txheej txheem ntawm lim me me xws li dej, qabzib, amino acids, sodium chloride thiab urea los ntawm cov ntshav mus rau glomerulus capsule vim lub siab hydrostatic siab, thaum. Selective reabsorption yog tus txheej txheem ntawm reabsorbing tej yam tseem ceeb molecules los ntawm glomerular filtrate rov qab mus rau cov ntshav.
Nephron yog lub hauv paus txheej txheem thiab kev ua haujlwm ntawm peb lub raum. Nws yog cov qauv microscopic uas muaj ntau qhov chaw. Muaj ntau lab tus nephrons hauv ib lub raum. Nephrons lim co toxins thiab khib nyiab los ntawm peb cov ntshav. Cov khib nyiab thiab co toxins tawm ntawm peb lub cev raws li cov zis. Yog li, kev tsim cov zis tshwm sim feem ntau hauv cov nephrons. Cov zis ntau lawm tshwm sim ntawm plaub lub tshuab. Ultrafiltration thiab xaiv reabsorption yog ob ntawm cov kauj ruam tseem ceeb no. Yog li, tsab xov xwm no yuav qhia txog qhov sib txawv ntawm ultrafiltration thiab xaiv reabsorption.
Ultrafiltration yog dab tsi?
Ultrafiltration yog thawj kauj ruam hauv kev tsim cov zis. Nws tshwm sim hauv glomerulus ntawm nephron. Nws yog cov txheej txheem lim ntshav kom tshem tawm nitrogenous pov tseg thiab cov kua dej ntau dhau ntawm peb lub cev raws li cov zis. Ultrafiltration tshwm sim ntawm qhov thaiv ntawm cov ntshav thiab cov filtrate hauv glomerular capsule. Cov filtrate uas tshwm sim los ntawm ultrafiltration yog glomerular filtrate los yog ultrafiltrate. Nws muaj cov molecules xws li dej, ntsev, amino acids, qabzib thiab urea lim tawm ntawm cov ntshav.
Daim duab 01: Ultrafiltration
Ultrafiltration tshwm sim vim lub siab nyob rau hauv glomerular capillaries. Afferent arteriole xa cov ntshav mus rau glomerulus. Ntawm qhov tod tes, efferent arteriole nqa cov ntshav tawm ntawm lub glomerulus. Lub cheeb ntawm lub efferent arteriole yog me dua lub cheeb ntawm afferent arteriole. Yog li ntawd, lub siab muaj nyob rau hauv lub glomerulus, thiab nws thawb me me molecules ntawm cov ntshav los ntawm lub me pores ntawm glomerular capillaries.
Kev xaiv Reabsorption yog dab tsi?
Kev xaiv reabsorption yog ib qho tseem ceeb ntawm kev tsim cov zis. Nws yog cov txheej txheem ntawm absorbing tej molecules los ntawm glomerular filtrate rov qab mus rau cov ntshav.
Daim duab 02: Xaiv Reabsorption
Kev xaiv reabsorption tshwm sim nyob rau hauv qhov sib thooj convoluted tubule. Thaum cov txheej txheem no, sodium (Na+) thiab chloride (Cl−) ions, qabzib, amino acids thiab cov vitamins rov qab mus rau hauv cov ntshav. Feem ntau, xaiv reabsorption siv lub zog. Ntxiv mus, nrog rau kev siv lub zog, cov ions tseem ceeb no nquag thauj mus rau hauv cov ntshav capillaries. Sodium-potassium twj tso kua mis yog ib qho ion channel koom nrog hauv kev xaiv haum.
Dab tsi yog qhov zoo sib xws ntawm Ultrafiltration thiab Selective Reabsorption?
- Ultrafiltration thiab xaiv reabsorption yog ob kauj ruam tseem ceeb hauv kev tsim cov zis.
- Ntxiv mus, ultrafiltration tsim glomerular filtrate, thiab xaiv reabsorption absorbs qee cov molecules los ntawm glomerular filtrate.
Qhov txawv ntawm Ultrafiltration thiab Selective Reabsorption yog dab tsi?
Ultrafiltration yog txheej txheem ntawm lim me me ntawm cov ntshav mus rau glomerular filtrate ntawm glomerular capsule. Ntawm qhov tod tes, xaiv reabsorption yog cov txheej txheem ntawm absorbing cov khoom tseem ceeb los ntawm ultrafiltrate rov qab mus rau cov ntshav ntawm lub proximal convoluted tubule. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm ultrafiltration thiab xaiv reabsorption.
Ntxiv mus, qhov sib txawv ntxiv ntawm ultrafiltration thiab xaiv reabsorption yog tias ultrafiltration tshwm sim nyob rau hauv siab thaum xaiv reabsorption tshwm sim los ntawm kev thauj mus los nrog kev siv lub zog.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm ultrafiltration thiab xaiv reabsorption.
Summary – Ultrafiltration vs Selective Reabsorption
Ultrafiltration yog thawj kauj ruam ntawm kev tsim cov zis uas cov tshuaj me me lim los ntawm Bowman's capsule mus rau qhov pom ntawm cov ntshav. Ntawm qhov tod tes, xaiv reabsorption yog theem thib ob ntawm cov zis ntau lawm uas cov molecules tseem ceeb reabsorb rov qab rau cov ntshav capillaries los ntawm ultrafiltrate. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm ultrafiltration thiab xaiv reabsorption. Tsis tas li ntawd, ultrafiltration tshwm sim nyob rau hauv lub glomerulus, thaum xaiv reabsorption tshwm sim nyob rau hauv lub proximal convoluted tubule.
