Renal Physiology — Flashcards

PTH acts on the kidney to inhibit renal _____ reabsorption in the proximal convoluted tubule, which therefore increases phosphate excretion (phosphaturic effect)

_____ cells are modified smooth muscle cells of the afferent arteriole

A decrease in renal perfusion pressure causes the _____ cells of the afferent arterioles to secrete renin

Calcitriol stimulates increased _____ of Ca2+ and reabsorption of phosphate by the kidney.

Mineralocorticoids (aldosterone) cause increased renal _____ secretion via action on the alpha-intercalated cells of the late distal tubule and collecting duct

If Cx _____ GFR, there is net secretion of X

If the filtered load is _____ than the excretion rate, there has been net reabsorption (reabsorption or secretion)

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

Atrial natriuretic peptide dilates afferent renal arterioles and constricts efferent renal arterioles, which _____ excretion of Na+ and water, along with downregulating ENaC on the collecting tubules

In the absence of _____, the principal cells of the late distal tubule and collecting duct are impermeable to water