Aldosterone is a hormone that increase the level of Na+ in the blood. Considering negative-feedback regulation of blood Na+ levels, which of the following events would most likely be an effect of aldosterone on the body in blood Na+ levels decreased?
A. Aldosterone would reduce activity in the brain that stimulated salty food cravings.
B. Aldosterone would cause a decrease in the amount of Na+ that was excreted as part of urine.
C. Aldosterone would cause an increase in the amount of Na+ that was excreted as part of urine.
D. Aldosterone would decrease the amount of Na+ that is absorbed at the small intestine.
Answer: B
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A. Type A B. Type B C. Type AB D. Type O E. All four blood types are found in almost equal percentages in the United States.
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