Puas cortical nephrons concentrate tso zis?

Cov txheej txheem:

Puas cortical nephrons concentrate tso zis?
Puas cortical nephrons concentrate tso zis?
Anonim

Cortical nephrons (85% ntawm tag nrho cov nephrons) feem ntau ua haujlwm ntawm excretory thiab kev tswj hwm, thaum juxtamedullary nephrons (15% ntawm nephrons) concentrate thiab dilute zis.

Dab tsi nephron tsim cov zis muaj zog?

Lub raum medulla tsim cov zis ntau dhau los ntawm kev tsim ntawm osmotic gradient txuas los ntawm cortico-medullary ciam mus rau sab hauv medullary tip.

Dab tsi yog txoj haujlwm ntawm cortical nephron?

Cortical nephrons muaj nyob rau hauv lub raum cortex, thaum juxtamedullary nephrons pom nyob rau hauv lub raum cortex ze rau lub raum medulla. Lub nephron lim thiab sib pauv dej thiab solutes nrog ob pawg ntawm cov hlab ntsha thiab cov ntaub so ntswg hauv lub raum.

Qhov concentration thiab dilution ntawm cov zis tshwm sim nyob qhov twg?

cheeb tsam ntawm lub raum uas yog lub luag haujlwm rau kev tsim cov kua dej ntau lossis cov zis yog the medulla (daim duab 1).

Yuav ua li cas tso zis kom concentrate?

Feem ntau, lub raum tubules tso cai rau cov dej feem ntau hauv cov ntshav kom lim thiab rov qab mus rau cov ntshav. NDI tshwm sim thaum lub raum tubules tsis teb rau cov tshuaj hormones hauv lub cev hu ua antidiuretic hormone (ADH), tseem hu ua vasopressin. ADH feem ntau ua rau lub raum ua kom cov zis ntau dua.

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