ATI LPN
Medical Surgical Endocrine Quiz Questions
Question 1 of 5
The secretes insulin and glucagon.
Correct Answer: C
Rationale: The pancreas (islets of Langerhans) secretes insulin and glucagon.
Question 2 of 5
inhibiting secretion represents a long-loop negative feedback mechanism.
Correct Answer: A
Rationale: Cortisol inhibits hypothalamic CRH in a long-loop feedback.
Question 3 of 5
Dwarfism may be the result of a deficiency of
Correct Answer: D
Rationale: Deficiencies in GHRH, GH, or somatomedins can cause dwarfism.
Question 4 of 5
Which of the following is NOT PRESENT when the thyroid gland is inactive?
Correct Answer: A
Rationale: An inactive thyroid has large follicles with abundant colloid and flat follicular cells due to low activity. Reabsorption lacunae (signs of hormone release) are absent. TSH would be elevated to stimulate the gland.
Question 5 of 5
Regarding the adrenal glands:
Correct Answer: D
Rationale: Conn's syndrome (primary hyperaldosteronism) causes K^+ depletion due to excess aldosterone. The medulla isn't essential, the cortex is ~90% of the gland, and 17α-hydroxylase is in zona fasciculata/reticularis.