Renal — Flashcards

Flashcard 681: What equation may be used to calculate free-water clearance (CH2O)? _____

Answer: C_H2O = V - C_osm

Extra: Where: - V = Urine flow rate - C_osm = Osmolar clearance Since C_osm = (U_osm × V) / P_osm, the formula can also be written as: C_H2O = V × (1 - U_osm / P_osm)

Flashcard 682: What is the major Starling force driving reabsorption into the peritubular capillaries of the proximal tubule? _____

Answer: High capillary oncotic pressure (C)

Flashcard 683: What two hormones are secreted by the posterior lobe of the pituitary gland?_____

Answer: ADH and oxytocin

Flashcard 684: The amount of _____ secretion by GI mucosal cells determines H2O secretion

Answer: Cl- (what ion)

Flashcard 685: ADH _____ the activity of medullary urea recycling

Answer: enhances

Flashcard 686: In secondary hyperparathyroidism, PTH levels are elevated secondary to _____

Answer: hypocalcemia (or hyperphosphatemia)

Flashcard 687: Is creatinine normally reabsorbed by the kidney?_____

Answer: No

Flashcard 688: ECF volume expansion results in _____ HCO3- reabsorption

Answer: decreased

Flashcard 689: [TF/P]x _____ 1 when the solute and water are reabsorbed at the same rate

Answer: =

Flashcard 690: Glucose and galactose are transported from the intestinal lumen into the cells by _____

Answer: Na+-dependent cotransport (SGLT1)