ATI RN
Questions on the Endocrine System Questions
Question 1 of 5
Adrenocorticotropic hormone (ACTH) stimulates the to produce and release its hormones.
Correct Answer: D
Rationale: ACTH from anterior pituitary stimulates adrenal cortex to release cortisol/glucocorticoids stress response. Anterior pituitary makes ACTH, not target. Adrenal medulla (epinephrine) is neural. Kidneys respond to aldosterone, not ACTH directly. Adrenal cortex's ACTH-driven output distinguishes it, key to HPA axis, unlike source, neural, or renal options.
Question 2 of 5
The main mineralocorticoid produced by the adrenal cortex is
Correct Answer: D
Rationale: Aldosterone, from adrenal cortex's zona glomerulosa, is the primary mineralocorticoid regulates sodium/potassium, blood volume. Cortisol (fasciculata) is a glucocorticoid, minor mineral effect. Glucagon (pancreas) raises glucose, unrelated. Epinephrine (medulla) is catecholamine, not steroid. Aldosterone's electrolyte focus distinguishes it, critical for pressure/fluid balance, unlike glucose or stress hormones.
Question 3 of 5
Which of the following is NOT an action of insulin?
Correct Answer: C
Rationale: Insulin doesn't break down glycogen it promotes glycogenesis (storage), lowering blood glucose by enhancing uptake and energy use. Breakdown (glycogenolysis) is glucagon's role opposite. Absorption, usage, and lowering are insulin's core actions. Glycogen synthesis distinguishes insulin, key to glucose reduction, unlike breakdown error.
Question 4 of 5
What is the hormone produced by adipose tissue which signals satiety?
Correct Answer: B
Rationale: Leptin, from adipose tissue, signals satiety to hypothalamus, reducing hunger adiposity feedback. Melatonin (pineal) governs sleep, not eating. Thymosins (thymus) boost immunity, unrelated. Glucagon (pancreas) raises glucose, not satiety. Leptin's appetite control distinguishes it, key to energy balance, unlike sleep, immune, or glucose hormones.
Question 5 of 5
The posterior pituitary gland is sometimes called the neurohypophysis and it secretes which neurohormones?
Correct Answer: D
Rationale: Posterior pituitary (neurohypophysis) secretes ADH (water balance) and oxytocin (labor) hypothalamus-made, stored/released here, neurohormones. Calcitonin (thyroid) and PTH (parathyroid) regulate calcium, not posterior. Insulin/glucagon are pancreatic, not pituitary. Adrenaline (adrenal medulla) and cortisol (cortex) are adrenal, not neurohypophyseal. ADH-oxytocin pair distinguishes posterior pituitary, key to hypothalamic neural-endocrine link, unlike calcium, glucose, or adrenal hormones.