Koeppen: Berne and Levy Physiology, 7th Edition
Chapter 02: Homeostasis of Body Fluids
1. A 100 mmol/L solution of MgCl2 would be expected to have an osmolality of which of
A. 50 mOsm/kg H2O
B. 100 mOsm/kg H2O
C. 200 mOsm/kg H2O
D. 300 mOsm/kg H2O
E. 350 mOsm/kg H2O
2. Three individuals, each weighing 55 kg and each having a plasma [Na+
] of 145 mEq/L,
receive infusions of different solutions. Individual A receives 1 L of isotonic NaCl (290
mOsm/kg H2O); individual B receives 1 L of a mannitol solution (290 mOsm/kg H2O);
and individual C receives 1 L of a 5% dextrose in water (D5W) solution (290 mOsm/kg
H2O). Assuming that there is no urine output, and after complete equilibration of the
extracellular and intracellular fluid, which of these individuals will have a lower plasma
A. Individual A (NaCl infusion).
B. Individual B (mannitol infusion).
C. Individual C (D5W infusion).
D. Individuals A, B, and C will have the same plasma [Na+
3. Intravenous infusion of 2 L of which of the following solutions will lead to the largest
increase in intracellular fluid volume?
B. Isotonic NaCl
C. Hypotonic NaCl
D. Hypertonic NaCl