Renal — Flashcards

Flashcard 261: Which cells of the kidney detect changes in Na+ delivery? _____

Answer: Macula densa cells

Extra: Other:

Flashcard 262: In the absence of ADH, the corticopapillary osmotic gradient is _____

Answer: smaller

Flashcard 263: What are the levels of TSH in hypothyroidism due to thyroiditis or I- deficiency? Why? _____

Answer: Increased due to negative feedback from decreased level of free T3

Flashcard 264: Para-aminohippuric acid (PAH) clearance can be used to calculate _____ because it is both filtered and secreted

Answer: effective renal plasma flow (eRPF)

Flashcard 265: The _____ and _____ limbs (loop of Henle) are permeable to Na+

Answer: thin

Flashcard 266: Secretion of PTH is controlled by extracellular (serum) Ca2+ binding to _____ receptors in the parathyroid cell membrane

Answer: Ca2+-sensing

Flashcard 267: The activity of the renal enzyme 1α-hydroxylase is increased with _____ PTH levels

Answer: increased

Flashcard 268: Without _____ (gonadal females), the wolffian ducts do not differentiate into male internal genitalia

Answer: testosterone

Flashcard 269: _____ hormone stimulates Ca2+-Na+ exchange in the basolateral membrane of distal tubule cells

Answer: Parathyroid

Flashcard 270: The _____ and _____ limbs (loop of Henle) are impermeable to water

Answer: thin