Description Case Study 1. Approximately how much water do you need each day to stay healthy? Identify at least two situations that increase the need for water. Then list three sources of water in the average person’s diet. 2. List five functions of water in the body. 3. What is the relationship between sodium and water balance, and how is that relationship monitored as well as maintained in the body? 4. Describe the effects of antidiuretic hormone (ADH) and aldosterone on body water. 5. What are two similarities and differences between sodium and potassium? Sodium and chloride? 6. How do sodium and potassium participate in nerve impulse transmission? 7. What metabolic processes affect the pH of body fluids? Why is it important for pH to be maintained within a narrow range? 8. What are some possible health effects of excess sodium in the body? What are the effects of sodium depletion? How might sodium depletion occur? 9. Within the fruit, vegetable, and grain groups, how can we increase our intake of potassium? 1 0. Of the micronutrients discussed in this chapter, which are typically consumed in excess? Which of the micronutrients in this chapter are typically lacking in North American diets?