1. The hormone that conserves body water is

a. vitamin D hormone.

b. antidiuretic hormone.

c. aldosterone.

d. parathyroid hormone.

2. The two minerals that occur in the extracellular fluid and regulate water balance are

a. calcium and potassium.

b. sodium and chloride.

c. phosphorus and magnesium.

d. potassium and magnesium.

3. A person is most likely to have a high body water content if he/she is

a. overweight.

b. underweight.

c. a bodybuilder.

d. sedentary.

4. The term extracellular fluid includes

a. plasma and tissue secretions.

b. plasma and fluid inside cells.

c. fluid surrounding cells and in beverages.

d. fluid surrounding cells and fluid inside cells.

5. A basic mechanism for maintaining body hydration is

a. thirst.

b. electrolyte balance.

c. acid-base balance.

d. activity level.

6. The hormone responsible for promoting conservation of sodium in the kidney is

a. aldosterone.

b. antidiuretic hormone.

c. angiotensin.

d. renin.

7. Mr. Jones consumes approximately 1500 mL/day from fluid contained in liquids and foods and from metabolism of foods. What percent of his fluid requirement does he meet if he requires 2400 mL/day?

a. 41%

b. 51%

c. 62%

d. 84%

8. Water formed from metabolism comes from

a. what is contained in foods.

b. moving from compartment to compartment.

c. what is absorbed from gastrointestinal secretions.

d. oxidation of nutrients in the cells.

9. The approximate volume of digestive secretions produced by the stomach each day is _____ mL.

a. 1000

b. 1500

c. 2000

d. 2500

10. The kidneys must excrete water in the urine because

a. the body needs to get rid of the ingested water.

b. water provides the vehicle for excretion of waste products.

c. they physiologically cannot retain all the water.

d. hormones ensure that a maximal amount of water is retained by the body.