ATI RN
Endocrine System MCQ Questions Questions
Question 1 of 5
Which of the following is not the treatment of hyperthyroidism?
Correct Answer: A
Rationale: Hyperthyroidism, excess thyroid hormone (T3/T4), is treated with anti-thyroid drugs, beta blockers, or surgery not synthetic thyroid hormone (e.g., levothyroxine), which treats hypothyroidism by replacing deficient hormone. The question lacks full options, but the answer 'synthetic thyroid hormone' fits as non-treatment for excess states. This distinction clarifies therapeutic goals, reducing T3/T4 versus supplementing, critical for managing thyroid overactivity.
Question 2 of 5
Which is not a function of the hypothalamus?
Correct Answer: D
Rationale: The hypothalamus regulates heart rate (via autonomic nerves), temperature (thermoregulatory center), and water balance (ADH via posterior pituitary), but doesn't secrete FSH follicle-stimulating hormone comes from the anterior pituitary, stimulated by hypothalamic GnRH. Hypothalamus controls pituitary, not producing gonadotropins itself. FSH secretion's absence distinguishes it, highlighting hypothalamic oversight versus pituitary execution, critical for endocrine hierarchy.
Question 3 of 5
The clusters of cells in the pancreas that produce hormones are the:
Correct Answer: B
Rationale: Islets of Langerhans, pancreatic endocrine clusters, produce hormones (insulin, glucagon) for glucose regulation. 'Nodules' isn't specific pancreas lacks this term. Pancreas has no medulla or cortex (adrenal terms) it's mixed endocrine-exocrine. Islets' distinct cellular groups (alpha, beta) distinguish them, critical for metabolic control, unlike vague or misapplied anatomical labels.
Question 4 of 5
One of the two hormones made by the pituitary that help regulate reproductive cells is luteinizing hormone. The other hormone is
Correct Answer: B
Rationale: The pituitary's anterior lobe produces luteinizing hormone (LH) and follicle-stimulating hormone (FSH) to regulate gametogenesis FSH stimulates sperm/egg development, LH triggers sex hormone release. Androgens are gonadal, epinephrine/norepinephrine are adrenal not pituitary-made. FSH's paired role with LH distinguishes it, vital for reproduction, contrasting with stress hormones.
Question 5 of 5
Most of the endocrine system is regulated by:
Correct Answer: A
Rationale: Negative feedback, where hormone levels inhibit further release (e.g., T4 suppressing TSH), stabilizes the endocrine system. Positive feedback (e.g., oxytocin in labor) is rare, and complexes describe mechanisms, not regulation. Negative feedback's prevalence distinguishes endocrine control, critical for homeostasis, contrasting with amplifying loops.