Renal Physiology — Flashcards

HCO3- is transported from the cells of proximal tubule into the blood by _____ cotransport and Cl--HCO3- exchange

Na+ is reabsorbed in the _____ via the Na+-K+-2Cl- cotransporter in the luminal membrane

Some _____ in the cells of the thick ascending limb diffuse back into the lumen, creating a lumen positive potential difference

How does ADH increase H2O permeability of the principal cells of the late distal tubule and collecting duct?Increased _____ channels via increased cAMP

In the _____ of the nephron, 50% of the filtered urea is reabsorbed by simple diffusion

In the _____ of the nephron, urea is secreted by simple diffusion

In the _____ of ADH, free-water clearance (CH2O) is positive

In the _____, 70% of the filtered urea is reabsorbed via facilitated diffusion (if ADH is present)

In the presence of _____, aquaporin 2 channels are inserted in the luminal membrane of principal cells of the late distal tubule and collecting duct

The primary regulation of aldosterone secretion occurs through changes in _____ (via the renin-angiotensin II-aldosterone system) and changes in serum potassium levels