ATI RN
Endocrine System Multiple Choice Questions Answers Questions
Question 1 of 5
All of the following increase BSL except
Correct Answer: D
Rationale: LH (luteinizing hormone) doesn't directly raise blood sugar it stimulates gonadal hormones (e.g., testosterone). T4 boosts metabolism, mobilizing glucose. Cortisol promotes gluconeogenesis. Growth hormone counters insulin, raising glucose. LH's reproductive focus distinguishes it, lacking metabolic impact, unlike glucose-elevating hormones.
Question 2 of 5
Which pattern of lab findings is most consistent of diabetes insipidus, note that the values are 24 hour urine volumes of ketones, glucose and protein respectively
Correct Answer: D
Rationale: Diabetes insipidus (DI) features high urine volume (e.g., 6.4 L/24h) with no ketones, glucose, or protein dilute urine from low ADH. '400' lacks units/context. High protein (2+) suggests kidney issues, not DI. High glucose (4+) fits diabetes mellitus. High volume, normal solutes distinguish DI, key to its water-losing pathology, unlike incomplete, proteinuric, or glucosuric patterns.
Question 3 of 5
Insulin secretion is stimulated by all of the following except
Correct Answer: C
Rationale: Noradrenaline (via α2-receptors) inhibits insulin secretion, prioritizing glucose mobilization in stress. Mannose (metabolized like glucose), glucagon (short-term β-cell boost), and leucine (amino acid trigger) stimulate insulin. Noradrenaline's suppression distinguishes it, critical for sympathetic-glucose balance, unlike stimulatory sugars, hormones, or amino acids.
Question 4 of 5
Which of the following anterior pituitary hormones stimulates milk production?
Correct Answer: B
Rationale: Prolactin from the anterior pituitary triggers milk production in mammary glands, not LH (ovulation), thyrotropin (thyroid), MSH (pigmentation), or ACTH (cortisol). Its specific lactogenic role distinguishes it, vital for postpartum nutrition, contrasting with reproductive or stress hormones.
Question 5 of 5
Which of the following thyroid hormones regulates blood calcium levels?
Correct Answer: D
Rationale: Calcitriol (active vitamin D) raises blood calcium by enhancing absorption, though not a thyroid hormone calcitonin (thyroid-produced) lowers it, while T3/T4 regulate metabolism, TRH/TSH stimulate thyroid. Context suggests calcitonin intent, but 'D' (calcitriol) aligns with calcium regulation broadly. This distinguishes calcium homeostasis, vital for bone and nerve function, contrasting with thyroid's metabolic focus.