UPDATED ACTUAL Exam Questions and
CORRECT Answers
Which of the following fluids is classified as extracellular fluid?
a) tears
b) gastrointestinal fluid
c) blood plasma
d) lymph
e) All of these choices are accurate. - CORRECT ANSWER -e
Which compartment contains the greatest amount of body fluid?
a) intracellular compartment
b) extracellular compartment
c) Both compartments contain the same amount of water. - CORRECT ANSWER -a
About 73% of lean muscle tissue is
a) protein.
b) water.
c) calcium.
d) sodium. - CORRECT ANSWER -b
The major cation in the intracellular fluid is ________, whereas the major anion in the
extracellular fluid is ________.
a) sodium; chloride
b) potassium; chloride
c) sodium; chloride
d) potassium; phosphate - CORRECT ANSWER -b
,Minerals most involved in fluid balance are
a) calcium and magnesium.
b) copper and iron.
c) calcium and phosphorus.
d) sodium and potassium. - CORRECT ANSWER -d
The sodium-potassium pump uses energy to move
a) potassium ions out of the cell.
b) sodium ions out of the cell.
c) water out of the cell.
d) water into the cell. - CORRECT ANSWER -b
Compared to dry environments, evaporation of sweat is ________ in humid environments,
resulting in _______ body cooling.
a) reduced; more
b) reduced; less
c) increased; more
d) increased; less - CORRECT ANSWER -b
The AI recommendation for total water intake is
a) 1 liter per kcal expended.
b) 12.4 liters per day.
c) 8 cups per day.
d) 15 cups for adult males and 11 cups for adult females. - CORRECT ANSWER -d
Extra water losses from heavy sweating or diarrhea will typically result in
a) increased urine output.
,b) decreased urine output.
c) no change in urine output.
d) decreased water loss from the lungs. - CORRECT ANSWER -b
Which of the following foods has the highest percent of total weight as water?
a) lettuce
b) bread
c) cheese
d) steak - CORRECT ANSWER -a
Drinking too much water can result in dilution of sodium in the blood, a condition known as
_________.
a) hypernatremia
b) hyperkalemia
c) hyponatremia
d) ADH syndrome - CORRECT ANSWER -c
ADH
a) is a pituitary hormone that decreases water excretion.
b) is minerals deposited into bone that give strength and rigidity.
c) is an adrenal hormone that causes sodium reabsorption.
d) is a protein-calcium complex that influences enzyme activity in cells.
e) is an enzyme in kidneys formed in response to low blood pressure. - CORRECT
ANSWER -a
Aldosterone
a) is a pituitary hormone that decreases water excretion.
b) is minerals deposited into bone that give strength and rigidity.
, c) is an adrenal hormone that increases sodium reabsorption in the kidney.
d) is a protein-calcium complex that influences enzyme activity in cells.
e) is an enzyme in kidneys formed in response to low blood pressure. - CORRECT
ANSWER -c
Phytic acid binds minerals so that they cannot be absorbed. Phytic acid is found in
a) leafy, green vegetables, such as spinach.
b) milk and dairy products.
c) cereal grain fibers.
d) liver and other organ meats. - CORRECT ANSWER -c
Oxalic acid binds minerals so they cannot be absorbed. Oxalic acid is found in
a) some leafy, green vegetables, such as spinach.
b) milk and dairy products.
c) cereal grain fibers.
d) liver and other organ meats. - CORRECT ANSWER -a
Sodium
a) acts as the principal positively charged ion in the intracellular fluid.
b) transmits electrical impulses through nerve cells.
c) promotes glycolysis.
d) releases energy from ATP. - CORRECT ANSWER -b
Most sodium consumed is from
a) table salt added at home.
b) naturally occurring sodium in foods.
c) tap water and medications.
d) processed foods and those purchased at restaurants. - CORRECT ANSWER -d