ATI LPN
Fluid Electrolyte Balance and Nutritional Needs Questions
Question 1 of 5
When aldosterone is absent, sodium reabsorption in the nephron is
Correct Answer: B
Rationale: Without aldosterone, sodium reabsorption decreases, as aldosterone promotes sodium retention in the kidneys.
Question 2 of 5
Which of the following would be expected to cause hyponatremia?
Correct Answer: D
Rationale: Excess ADH causes water retention, diluting plasma sodium and leading to hyponatremia.
Question 3 of 5
The most common cause of hyperkalemia is
Correct Answer: D
Rationale: Cell damage releases intracellular potassium into the extracellular fluid, causing hyperkalemia.
Question 4 of 5
Calcium's roles in the body include
Correct Answer: D
Rationale: Calcium is essential for bone structure, muscle function, clotting, and cardiac action potentials.
Question 5 of 5
Calcitonin
Correct Answer: D
Rationale: Calcitonin lowers blood calcium by inhibiting bone resorption.