ATI LPN
ATI Quiz Medical Surgical Endocrine Questions
Question 1 of 5
Regarding cellular metabolism of cholesterol:
Correct Answer: D
Rationale: Cholesterol inhibits HMG-CoA reductase, is esterified by ACAT, and downregulates LDL receptors via SREBP, making all statements true.
Question 2 of 5
Osteoclasts are derived from:
Correct Answer: D
Rationale: Osteoclasts originate from monocyte/macrophage lineage in bone marrow.
Question 3 of 5
Which gland is the only gland that is both an endocrine gland and an exocrine gland?
Correct Answer: C
Rationale: The pancreas acts as an endocrine gland, secreting insulin directly into the bloodstream, and an exocrine gland, secreting digestive enzymes through ducts.
Question 4 of 5
Which hormone acts on bone to release calcium into the blood?
Correct Answer: D
Rationale: Parathormone, or parathyroid hormone, is produced and secreted by the parathyroid glands. Low calcium levels will stimulate release of parathyroid hormone, which increases the plasma level of calcium. Parathormone acts on the renal tubules to increase the excretion of phosphorus in the urine and to stimulate the reabsorption of calcium. Parathormone also acts on bone, causing the release of calcium from the bone into the bloodstream.
Question 5 of 5
If an endocrine gland begins to hypersecrete, it usually causes which result?
Correct Answer: A
Rationale: Hyperplasia (increased cellular growth) is the usual cause of hypersecretion of an endocrine gland.