ATI RN
Questions on the Endocrine System Questions
Question 1 of 5
Which of the following is an effect of aldosterone secretion?
Correct Answer: A
Rationale: Aldosterone increases Na+ and water reabsorption, raising blood volume reduces urine indirectly, not lowers pressure. 'A' inferred. This distinguishes aldosterone's hypertensive role, key to fluid balance, contrasting with diuretic effects.
Question 2 of 5
Which of the following is an example of a hormone that is secreted from an endocrine gland in response to a chemical change in the blood?
Correct Answer: D
Rationale: PTH (calcium drop), insulin (glucose rise), and glucagon (glucose drop) all respond to blood chemistry changes 'all' fits. This distinguishes endocrine responsiveness, critical for homeostasis, contrasting with static or neural triggers.
Question 3 of 5
Glucagon acts on the ___ to convert glycogen into glucose.
Correct Answer: A
Rationale: Glucagon targets liver hepatocytes for glycogenolysis, not pancreas (secretion site) or muscle (lacking receptors). 'A' inferred. This distinguishes glucagon's hepatic role, vital for glucose release, contrasting with insulin's broader targets.
Question 4 of 5
From a medical perspective, hormones can be taken orally because they are water-insoluble lipids and poorly digested.
Correct Answer: D
Rationale: Steroid hormones (e.g., cortisol) are lipid-soluble, taken orally as they resist digestion and absorb well water-insoluble trait aids stability. Carbohydrates aren't hormones energy sources. Peptides (e.g., insulin) and proteins degrade in the gut, requiring injection. Steroids' lipid nature distinguishes them, critical for oral administration, unlike digestible or non-hormonal options.
Question 5 of 5
The target organs of ADH are the:
Correct Answer: B
Rationale: ADH (vasopressin) targets kidneys (water reabsorption via aquaporins) and blood vessels (vasoconstriction) raises blood pressure/volume. Adrenal cortex (aldosterone) and liver (metabolism) aren't ADH targets different systems. Liver-kidney omits vessels. Pituitary releases ADH, thyroid is unrelated. Kidney-vessel dual action distinguishes ADH, critical for fluid balance, unlike endocrine or metabolic pairs.