ATI LPN
14 Nutrition and Fluid Balance Questions
Question 1 of 5
Extracellular fluid has a
Correct Answer: C
Rationale: Extracellular fluid has a higher sodium content than intracellular fluid, where potassium predominates.
Question 2 of 5
The primary regulator of plasma sodium concentration is
Correct Answer: C
Rationale: ADH regulates water reabsorption, indirectly controlling plasma sodium concentration by adjusting osmolality.
Question 3 of 5
Increased ADH secretion could be stimulated by which of the following situations?
Correct Answer: B
Rationale: Increased blood osmolality triggers ADH release to retain water and restore balance.
Question 4 of 5
Potassium levels in the body are regulated by
Correct Answer: D
Rationale: Aldosterone regulates potassium by promoting its secretion in the kidneys.
Question 5 of 5
In hypocalcemia,
Correct Answer: D
Rationale: Low calcium increases membrane permeability to sodium, heightening excitability.