RAAS — Flashcards

Flashcard 31: How do levels of plasma renin and aldosterone change in Bartter syndrome? _____

Answer: Increased (due to decreased Na+ reabsorption)

Flashcard 32: Long-term effects of ACTH include _____ of ACTH receptors, thus _____ the sensitivity of the adrenal cortex

Answer: up-regulation

Flashcard 33: Cystic fibrosis may present with _____ alkalosis

Answer: contraction

Flashcard 34: Angiotensin II acts on the posterior pituitary to increase release of _____

Answer: ADH

Extra: Other:

Flashcard 35: In the third stage (rapid) of ovarian follicle development, a single graafian follicle achieves dominance and ruptures, releasing its oocyte into the peritoneal cavity via the process of _____

Answer: ovulation

Flashcard 36: Calcitriol increases absorption of Ca2+ and _____ of phosphate in the intestine

Answer: absorption

Flashcard 37: In response to _____ blood pressure, the JG cells of the kidney cause increased renin release

Answer: decreased

Extra: Other:

Flashcard 38: What effect does 17α-hydroxylase deficiency have on blood pressure? _____

Answer: Increased (hypertension)

Extra: * due to increased mineralocorticoids

Flashcard 39: What is the level of ACTH in 21-hydroxylase deficiency? Why? _____

Answer: Increased, due to decreased feedback inhibition from cortisol

Extra: 21-hydroxylase deficiency is the most common type of Congenital Adrenal Hyperplasia (CAH). Pathophysiology: Decreased cortisol → decreased negative feedback on the anterior pituitary → increased ACTH → adrenocortical hyperplasia.

Flashcard 40: Cholecystokinin (CCK) is secreted from _____ cells in the duodenum and the jejunum

Answer: I