ATI LPN
Nutrition and Fluid Balance Chapter 14 Questions
Question 1 of 5
Water moves back and forth across the plasma membrane by the process of
Correct Answer: A
Rationale: Osmosis is the passive movement of water across membranes based on concentration gradients.
Question 2 of 5
You've been working outside in the hot sun and are dripping wet with sweat. Your fluid intake has been minimal as you have been too busy to stop and get a drink. You would expect
Correct Answer: D
Rationale: Sweating increases osmolality, stimulating ADH to conserve water.
Question 3 of 5
Which of the following statements concerning potassium ions is false?
Correct Answer: C
Rationale: High aldosterone increases potassium secretion, not decreases it, making this statement false.
Question 4 of 5
Most of the calcium in the body is in the
Correct Answer: A
Rationale: Over 99% of body calcium is stored in bones as hydroxyapatite.
Question 5 of 5
Parathyroid hormone effects the
Correct Answer: C
Rationale: PTH acts on bones (resorption), kidneys (reabsorption), and intestines (via vitamin D).