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