ATI LPN
ATI LPN Test Bank
Fluid Electrolyte Balance and Nutritional Needs Questions
Question 1 of 5
Calcitonin
Correct Answer: D
Rationale: Calcitonin lowers blood calcium by inhibiting bone resorption.
Question 2 of 5
Which of the following is not a buffer system of the body?
Correct Answer: D
Rationale: NaCl does not buffer pH; it's an electrolyte, not a buffer.
Question 3 of 5
Which of the following can play a role in buffering the pH of urine?
Correct Answer: D
Rationale: All three (ammonia, bicarbonate, phosphate) buffer urine pH by binding H⁺.
Question 4 of 5
Respiratory alkalosis can occur as a result of
Correct Answer: D
Rationale: Hyperventilation lowers CO₂ raising pH and causing respiratory alkalosis.
Question 5 of 5
untreated diabetes mellitus
Correct Answer: C
Rationale: Untreated diabetes causes ketoacidosis, a metabolic acidosis.