Renal — Flashcards

Flashcard 671: What two hormones are secreted by the posterior lobe of the pituitary gland?_____

Answer: ADH and oxytocin

Flashcard 672: 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 673: _____ is the concentration of osmotically active particles, expressed in mOsm/L

Answer: Osmolarity

Flashcard 674: En route to the posterior pituitary, ADH and oxytocin are packaged in secretory granules with their respective _____

Answer: neurophysins

Flashcard 675: Where in the nephron does most uric acid reabsorption take place?_____

Answer: Early PCT

Flashcard 676: The _____ ratio gives the fraction of filtered load remaining of a solute at any point along the nephron

Answer: [TF/P]x/[TF/P]inulin

Flashcard 677: What is the major Starling force driving reabsorption into the peritubular capillaries of the proximal tubule? _____

Answer: High capillary oncotic pressure (C)

Flashcard 678: _____ is a peptide hormone that directly inhibits osteoclasts, causing decreased bone resorption

Answer: Calcitonin

Flashcard 679: When a person has high K+ levels, K+ can be secreted in the terminal nephron segments by the _____ cells

Answer: principal

Flashcard 680: The bulk of Ca2+ reabsorption occurs in the _____ (67%)

Answer: proximal convoluted tubule