Renal Blood Flow and Glomerular Filtration — Flashcards

Flashcard 1: The _____ ratio is used as a marker for water reabsorption along the nephron

Answer: [TF/P]inulin

Flashcard 2: _____ levels of angiotensin II primarily causes vasoconstriction of the renal efferent arterioles

Answer: Low (normal)

Flashcard 3: Renal blood flow (RBF) remains relatively constant between mean arterial pressure (MAP) ranges of _____ to 180 mmHg

Answer: 80

Flashcard 4: Creatinine clearance slightly _____-estimates GFR because creatinine is moderately secreted by renal tubules

Answer: over

Flashcard 5: The glomerular filtration barrier is responsible for filtering the plasma according to the properties of a compounds _____ and net charge

Answer: size

Flashcard 6: An _____ in the filtration fraction is associated with a decrease in the Renal Plasma Flow (RPF).

Answer: increase

Flashcard 7: Angiotensin II normally _____ the efferent arteriole of the kidney

Answer: constricts

Flashcard 8: The _____ mechanism of renal autoregulation states that renal afferent arterioles contract in response to vasoactive substances released by the macula densa

Answer: tubuloglomerular feedback

Flashcard 9: _____ is the volume of plasma completely cleared of a substance by the kidneys per unit time

Answer: Renal clearance

Flashcard 10: What is the formula for renal clearance ($C_x$)?

Answer: $C_x = \frac{U_x V}{P_x}$

Extra: $U_x$ = Urine concentration of X $P_x$ = Plasma concentration of X $V$ = Urine flow rate