ATI LPN
PN Learning System Medical Surgical Endocrine Practice Quiz Questions
Question 1 of 5
Thyroxine and triiodothyronine, the thyroid hormones, do not have a specific target organ; instead, they stimulate most of the cells of the body to metabolize at a faster rate.
Correct Answer: A
Rationale: Thyroid hormones increase metabolism in nearly all body cells.
Question 2 of 5
The pancreatic islets produce __________.
Correct Answer: A
Rationale: Islets secrete insulin and glucagon to regulate blood glucose.
Question 3 of 5
Melatonin is involved with circadian rhythms.
Correct Answer: A
Rationale: Melatonin helps synchronize the body's day-night cycle.
Question 4 of 5
Mr. Manning's serum calcium level is reported as a 5.9 mg/dL. What treatment should the nurse anticipate?
Correct Answer: B
Rationale: Severe hypocalcemia (<8 mg/dL) requires IV calcium (e.g., calcium gluconate) to rapidly correct and prevent complications like tetany.
Question 5 of 5
A 38-year-old man who has galactorrhea is found to have a prolactinoma. His physician treats him with bromocriptine, which eliminates the galactorrhea. The basis for the therapeutic action of bromocriptine is that it
Correct Answer: C
Rationale: Bromocriptine is a dopamine agonist. The secretion of prolactin by the anterior pituitary is tonically inhibited by the secretion of dopamine from the hypothalamus. Thus, a dopamine agonist acts just like dopamine "it inhibits prolactin secretion from the anterior pituitary.