ATI LPN
Medical Surgical Endocrine Quiz Questions
Question 1 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 2 of 5
Calcitonin secretion is increased by:
Correct Answer: D
Rationale: Calcitonin secretion is stimulated by gastrin, CCK, secretin, and glucagon, all of which respond to high Ca2+ or digestive signals.
Question 3 of 5
Vitamin B_1 (thiamine) deficiency leads to:
Correct Answer: B
Rationale: Thiamine deficiency causes beriberi (wet or dry), affecting nerves and heart; other options relate to different vitamin deficiencies.
Question 4 of 5
Which is TRUE:
Correct Answer: D
Rationale: Gastrin promotes mucosal growth; G cells (not TG) secrete gastrin, secretin family includes CCK and VIP, G_{17} is principal, and G_{34} has a longer half-life.
Question 5 of 5
K^+ is actively reabsorbed from the GIT lumen in the:
Correct Answer: D
Rationale: K^+ is actively reabsorbed in the distal colon; most GIT segments secrete K^+ into the lumen.