,Body Fluids
1. Which of the following functions is not performed by the aqueous medium of body
fluids in the human body?
A) Providing nutrients
B) Carrying away waste
C) Bringing chemicals that allow cells to communicate with each other
D) Removing nutrients
Ans: D Difficulty: Easy
2. Which of the following is not true about the distribution of water in an average human
body?
A) Almost one-third of the water in the body is intracellular fluid
B) Almost one-third of the water in the body is extracellular fluid
C) Almost two-thirds of the water in the body is intracellular fluid
D) Almost one-quarter of the water in the body is interstitial fluid
Ans: A Difficulty: Easy
3. Which of the following statements about body fluids is true?
A) Extracellular fluid is the most abundant body fluid
B) Interstitial fluid and plasma are the most common intracellular fluids
C) Intracellular fluid is the most abundant body fluid
D) Intracellular fluid makes up 46% of body fluid
Ans: C Difficulty: Medium
4. Which one of the following is not an example of extracellular fluids that occur in lesser
amounts in the human body?
A) Urine B) Plasma C) Cerebrospinal fluid D) Lymph
Ans: B Difficulty: Easy
5. What is the approximate percentage of minor components in body fluids?
A) 10% B) 8% C) 1% D) 3%
Ans: D Difficulty: Medium
Page 375
, Body Fluids
6. Which of the following is not expected to dissolve in the aqueous medium that
constitutes body fluids?
A) Large molecules that have many polar functional groups
B) Small nonpolar molecules
C) Electrolytes
D) Small polar molecules with intermolecular hydrogen bonding capabilities
Ans: B Difficulty: Easy
7. What is the main difference in composition between interstitial fluid and plasma?
A) Plasma contains less protein C) Plasma contains more chloride (Cl–)
B) Plasma contains less sodium (Na+) D) Plasma contains more protein
Ans: D Difficulty: Medium
8. What is the main difference in composition between intracellular and extracellular
fluids?
A) Intracellular fluid contains a high concentration of Na+ and Cl–
B) Extracellular fluid contains a high concentration of K+ and HPO42–
C) Protein is most abundant in intracellular fluid
D) Protein is most abundant in extracellular fluid
Ans: C Difficulty: Medium
9. Which of the following is true about body fluids?
A) Each type contains the same number of dissolved particles per unit volume
B) Each type contains different number of dissolved particles per unit volume
C) The principal cation in extracellular fluid is potassium (K+)
D) Protein is most abundant in extracellular fluid
Ans: A Difficulty: Easy
Page 376
, Body Fluids
10. Besides K+ and HPO42–, what ions are present in a much higher concentration in
intracellular fluids compared to plasma and interstitial fluids?
A) Na+ and Cl–
B) Mg2+ and SO42–
C) Mg2+ and HCO3–
D) Na+ and SO42–
Ans: B Difficulty: Difficult
11. If a body contains 42 L of fluid, approximately how many liters are contained in
intracellular fluids?
A) 13 L B) 27 L C) 11 L D) 3 L
Ans: B Difficulty: Difficult
12. If a body contains 42 L of fluid, approximately how many liters are contained in
interstitial fluids?
A) 13 L B) 27 L C) 11 L D) 3 L
Ans: C Difficulty: Difficult
13. If a body contains 42 L of fluid, approximately how many liters are contained in
plasma?
A) 13 L B) 27 L C) 11 L D) 3 L
Ans: D Difficulty: Difficult
14. Which of the following is true about the composition of the blood?
A) Blood vessels that carry blood from the heart to the tissues are called veins
B) Blood vessels that carry blood from the tissues to the heart are called arteries
C) Arteries and veins are connected together by blood vessels called capillaries
D) Capillaries have very thick walls to prevent waste from entering the interstitial
fluid
Ans: C Difficulty: Medium
15. Which of the following is a function of the blood in transport?
A) Fighting infections and the factors needed for clotting
B) Maintaining a constant body temperature
C) Carrying gases (O2 and CO2) to or from tissues
D) Carrying gases (CO and H2) to or from tissues
Ans: C Difficulty: Easy
Page 377
1. Which of the following functions is not performed by the aqueous medium of body
fluids in the human body?
A) Providing nutrients
B) Carrying away waste
C) Bringing chemicals that allow cells to communicate with each other
D) Removing nutrients
Ans: D Difficulty: Easy
2. Which of the following is not true about the distribution of water in an average human
body?
A) Almost one-third of the water in the body is intracellular fluid
B) Almost one-third of the water in the body is extracellular fluid
C) Almost two-thirds of the water in the body is intracellular fluid
D) Almost one-quarter of the water in the body is interstitial fluid
Ans: A Difficulty: Easy
3. Which of the following statements about body fluids is true?
A) Extracellular fluid is the most abundant body fluid
B) Interstitial fluid and plasma are the most common intracellular fluids
C) Intracellular fluid is the most abundant body fluid
D) Intracellular fluid makes up 46% of body fluid
Ans: C Difficulty: Medium
4. Which one of the following is not an example of extracellular fluids that occur in lesser
amounts in the human body?
A) Urine B) Plasma C) Cerebrospinal fluid D) Lymph
Ans: B Difficulty: Easy
5. What is the approximate percentage of minor components in body fluids?
A) 10% B) 8% C) 1% D) 3%
Ans: D Difficulty: Medium
Page 375
, Body Fluids
6. Which of the following is not expected to dissolve in the aqueous medium that
constitutes body fluids?
A) Large molecules that have many polar functional groups
B) Small nonpolar molecules
C) Electrolytes
D) Small polar molecules with intermolecular hydrogen bonding capabilities
Ans: B Difficulty: Easy
7. What is the main difference in composition between interstitial fluid and plasma?
A) Plasma contains less protein C) Plasma contains more chloride (Cl–)
B) Plasma contains less sodium (Na+) D) Plasma contains more protein
Ans: D Difficulty: Medium
8. What is the main difference in composition between intracellular and extracellular
fluids?
A) Intracellular fluid contains a high concentration of Na+ and Cl–
B) Extracellular fluid contains a high concentration of K+ and HPO42–
C) Protein is most abundant in intracellular fluid
D) Protein is most abundant in extracellular fluid
Ans: C Difficulty: Medium
9. Which of the following is true about body fluids?
A) Each type contains the same number of dissolved particles per unit volume
B) Each type contains different number of dissolved particles per unit volume
C) The principal cation in extracellular fluid is potassium (K+)
D) Protein is most abundant in extracellular fluid
Ans: A Difficulty: Easy
Page 376
, Body Fluids
10. Besides K+ and HPO42–, what ions are present in a much higher concentration in
intracellular fluids compared to plasma and interstitial fluids?
A) Na+ and Cl–
B) Mg2+ and SO42–
C) Mg2+ and HCO3–
D) Na+ and SO42–
Ans: B Difficulty: Difficult
11. If a body contains 42 L of fluid, approximately how many liters are contained in
intracellular fluids?
A) 13 L B) 27 L C) 11 L D) 3 L
Ans: B Difficulty: Difficult
12. If a body contains 42 L of fluid, approximately how many liters are contained in
interstitial fluids?
A) 13 L B) 27 L C) 11 L D) 3 L
Ans: C Difficulty: Difficult
13. If a body contains 42 L of fluid, approximately how many liters are contained in
plasma?
A) 13 L B) 27 L C) 11 L D) 3 L
Ans: D Difficulty: Difficult
14. Which of the following is true about the composition of the blood?
A) Blood vessels that carry blood from the heart to the tissues are called veins
B) Blood vessels that carry blood from the tissues to the heart are called arteries
C) Arteries and veins are connected together by blood vessels called capillaries
D) Capillaries have very thick walls to prevent waste from entering the interstitial
fluid
Ans: C Difficulty: Medium
15. Which of the following is a function of the blood in transport?
A) Fighting infections and the factors needed for clotting
B) Maintaining a constant body temperature
C) Carrying gases (O2 and CO2) to or from tissues
D) Carrying gases (CO and H2) to or from tissues
Ans: C Difficulty: Easy
Page 377
