ATI LPN
ATI Medical Surgical Endocrine Questions
Question 1 of 5
Which of the following hormones originates in the anterior pituitary?
Correct Answer: D
Rationale: Thyroid-stimulating hormone (TSH) is secreted by the anterior pituitary. Dopamine, growth hormone-releasing hormone (GHRH), somatostatin, and gonadotropin-releasing hormone (GnRH) all are secreted by the hypothalamus. Oxytocin is secreted by the posterior pituitary. Testosterone is secreted by the testes.
Question 2 of 5
is not a tropic hormone.
Correct Answer: B
Rationale: ADH (vasopressin) regulates water balance, not other glands' hormone secretion.
Question 3 of 5
do(es) not use a second messenger system.
Correct Answer: B
Rationale: Steroid hormones and thyroid hormone (TH) act directly via nuclear receptors.
Question 4 of 5
Permissiveness of hormones refers to the fact that
Correct Answer: C
Rationale: Permissiveness (e.g., thyroid hormone aiding epinephrine) enhances another hormone's effect.
Question 5 of 5
Melatonin's actions may include
Correct Answer: D
Rationale: Melatonin regulates sleep-wake cycles and acts as an antioxidant.