What is the primary source of sodium in the average American diet?
A) Using a salt shaker to add sodium to food
B) Consuming food and fluid that naturally contain sodium
C) Consuming processed food
D) Consuming foods such as milk, vegetables, and grains
Q. 2A condition that results from consuming excess fluids is called ____.
A) hypohydration
B) euhydration
C) hyperhydration
D) dehydration
Q. 3In addition to beverages and food, another source of water for the body is ____.
A) aerobic metabolism
B) anaerobic metabolism
C) osmosis
D) hydrostatic pressure
Q. 4Which accounts for the largest amount of water loss in an athlete exercising in the heat?
A) Feces
B) Lungs
C) Perspiration
D) Urine
Q. 5Which accounts for the largest amount of water loss in a sedentary individual?
A) Feces
B) Lungs
C) Perspiration
D) Urine
Q. 6What is insensible water loss?
A) Loss of water as a result of sweating but not cooling in humid conditions
B) Large losses of water due to excessive sweating
C) Loss of water from the body that is not noticeable
D) Excessive loss of water through urine
Q. 7If the osmolarity of intracellular fluid (ICF) is higher than that of extracellular fluid (ECF), what is the tonicity of the blood?
A) The blood is isotonic to the ICF.
B) The blood is hypotonic to the ICF.
C) The blood is hypertonic to the ICF.
D) The blood is hypertonic to the ECF.
Q. 8If the osmolarity of intracellular fluid is higher than that of extracellular fluid, what is the effect on water movement?
A) Water will flow out of the cell.
B) Water will flow into the cell.
C) More water will be absorbed from food.
D) More sweat will be produced.
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