ATI LPN
Nutrition and Fluid Balance Questions
Question 1 of 5
Which of the following individuals would have the largest percentage of their bodyweight as water?
Correct Answer: A
Rationale: Children, like a 7-year-old female, have the highest percentage of body water (around 70-75%) due to lower fat content.
Question 2 of 5
Renin is released by the
Correct Answer: B
Rationale: Renin is secreted by the juxtaglomerular cells of the kidney in response to low blood pressure or sodium levels.
Question 3 of 5
Elevated blood pressure under resting conditions results in increased urinary output because
Correct Answer: D
Rationale: High blood pressure triggers baroreceptors to reduce ADH, increasing urine output to lower volume.
Question 4 of 5
Decreased extracellular potassium levels cause
Correct Answer: B
Rationale: Low extracellular potassium hyperpolarizes membranes, reducing excitability.
Question 5 of 5
Which of the following is correctly matched?
Correct Answer: A
Rationale: Alkalosis can cause hypokalemia due to potassium shifting into cells.