Qhov sib txawv tseem ceeb ntawm tubular reabsorption thiab tubular secretion yog tias tubular reabsorption cuam tshuam nrog kev tshem tawm qee cov kuab tshuaj thiab dej los ntawm cov kua dej hauv tubular thiab lawv rov qab mus rau cov ntshav, thaum tubular secretion cuam tshuam nrog kev tshem tawm hydrogen, creatinine, thiab tshuaj. los ntawm cov ntshav thiab rov qab mus rau lub ducts.
Urine yog cov khoom lag luam uas tau los ntawm cov dej ntau dhau thiab cov khoom pov tseg hauv cov metabolism. Filtration, secretion thiab reabsorption yog peb kauj ruam tseem ceeb ntawm kev tsim cov zis hauv ob lub raum. Ntshav pom tshwm sim hauv glomerulus. Dej thiab nitrogenous pov tseg lim rau hauv glomerulus los ntawm cov ntshav. Tom qab ntawd lub glomerular filtrate mus los ntawm lwm qhov chaw ntawm nephron, suav nrog cov tubules proximal / distal convoluted, lub voj ntawm Henle, thiab cov ducts. Rov qab nqus ntawm qhov tseem ceeb molecules thiab ions tshwm sim thaum lub glomerular filtrate dhau los ntawm nephron. Tsis tas li ntawd, qee yam tshuaj, xws li hydrogen ions, creatinine, thiab tshuaj, thiab lwm yam, yuav raug tso rau hauv cov hlab ntim los ntawm cov ntshav.
Tubular Reabsorption yog dab tsi?
Tubular reabsorption yog ib qho ntawm peb kauj ruam tseem ceeb ntawm kev tsim cov zis. Nws yog cov txheej txheem ntawm kev txav cov kuab tshuaj thiab dej los ntawm cov kua dej tubular mus rau hauv cov ntshav ncig. Qhov tseeb, cov kuab tshuaj thiab dej no tau rov qab los rau hauv peritubular capillaries, uas yog cov hlab ntsha me me khiav ncig lub nephron. Raws li qhov tshwm sim ntawm tubular reabsorption, cov kua tubular ua kom muaj zog dua. Yog li ntawd, cov reabsorbed solutes, ions thiab dej rov qab mus rau cov ntshav nyob rau hauv lub peri-tubular capillaries.
Daim duab 01: Tubular Reabsorption thiab Tubular Secretion
Reabsorption tuaj yeem tshwm sim los ntawm cov txheej txheem passive lossis nquag. Passive diffusion tshwm sim los ntawm plasma membrane ntawm lub raum epithelial hlwb, raws li qhov concentration gradient. Kev thauj mus los ua haujlwm tshwm sim ntawm daim nyias nyias-bound ATPases. Tsis tas li ntawd, kev thauj mus los kuj tseem siv tau los txhawm rau rov nqus dej.
Tubular secretion yog dab tsi?
Tubular secretion yog lwm kauj ruam tseem ceeb ntawm kev tsim cov zis. Nws yog cov txheej txheem ntawm kev tshem tawm hydrogen, creatinine, ions (potassium ions, ammonium ions, thiab lwm yam) thiab lwm yam khoom pov tseg xws li tshuaj, urea, thiab qee cov tshuaj hormones los ntawm cov ntshav hauv peri-tubular capillaries thiab xa rov qab mus rau tubular. kua dej nyob rau hauv lub raum tubular lumen. Nws yog ib qho tseem ceeb kom tswj cov ntshav pH nyob rau hauv lub cev. Ntxiv mus, nws pab ntxuav cov ntshav.
Daim duab 02: Cov tshuaj Reabsorbed thiab secreted
Zoo ib yam li reabsorption, tubular secretion kuj tshwm sim los ntawm passive diffusion thiab nquag thauj. Thaum cov txheej txheem tso zis tiav lawm, cov zis tawm hauv lub cev los ntawm cov zis.
Dab tsi yog qhov zoo sib xws ntawm Tubular Reabsorption thiab Tubular Secretion?
- Tubular reabsorption thiab tubular secretion yog ob txoj kev sib txawv.
- Ob txheej txheem ua haujlwm ntawm tubular kua thiab ntshav hauv peri-tubular capillary network.
- Urine yog cov khoom kawg uas tshuav nyob rau hauv cov ducts tom qab reabsorption thiab secretion.
Qhov txawv ntawm Tubular Reabsorption thiab Tubular Secretion yog dab tsi?
Tubular reabsorption thiab tubular secretion yog ob kauj ruam loj tshwm sim hauv nephrons. Tubular reabsorption yog cov txheej txheem ntawm tshem cov kua thiab dej los ntawm cov kua dej tubular thiab xa rov qab mus rau hauv cov ntshav ntawm peritubular capillaries. Lub caij no, tubular secretion yog cov txheej txheem ntawm kev tshem tawm hydrogen, qee cov ions thiab cov khoom pov tseg xws li tshuaj, urea thiab qee cov tshuaj hormones los ntawm cov ntshav thiab xa rov qab mus rau cov kua dej hauv tubular. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm tubular reabsorption thiab tubular secretion. Tsis tas li ntawd, qee cov kua dej thiab feem ntau ntawm cov dej tau rov qab los ntawm cov kua dej hauv cov hlab ntsha mus rau hauv cov ntshav thaum qee cov ions, cov khoom pov tseg, tshuaj, thiab qee cov tshuaj hormones tau tso tawm los ntawm cov ntshav mus rau cov kua dej tubular.
Ntxiv mus, tubular reabsorption tseem ceeb vim nws txuag qee qhov tseem ceeb thiab dej thaum lub cev tso tawm tseem ceeb vim nws tswj cov ntshav pH thiab ntxuav cov ntshav. Yog li, qhov no yog lwm qhov sib txawv ntawm tubular reabsorption thiab tubular secretion.
Summary – Tubular Reabsorption vs Tubular Secretion
Tubular reabsorption thiab tubular secretion yog ob ntawm peb kauj ruam tseem ceeb ntawm kev tsim cov zis. Tubular reabsorption yog hais txog cov txheej txheem ntawm kev txav cov kua thiab dej los ntawm cov kua dej hauv tubular mus rau hauv cov ntshav ncig los ntawm peritubular capillary network. Tubular secretion yog cov txheej txheem rov qab los ntawm qee qhov ions, hydrogen, tshuaj thiab lwm yam khoom pov tseg raug tshem tawm ntawm cov ntshav los ntawm per-tubular capillary network thiab xa rov qab mus rau cov kua dej ntawm cov kav dej. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm tubular reabsorption thiab tubular secretion.
