Aldosterone Is a Hormone That Increase the Level of Na⁺

question 55

Multiple Choice

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 cause a decrease in the amount of Na⁺ that was excreted as part of urine.
• B) Aldosterone would cause an increase in the amount of Na⁺ that was excreted as part of urine.
• C) Aldosterone would reduce activity in the brain that stimulated salty food cravings.
• D) Aldosterone would decrease the amount of Na⁺ that is absorbed at the small intestine.

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Definitions:

Frontal Lobe

The part of the brain located at the front of each cerebral hemisphere, involved in decision making, problem solving, and control of purposeful behaviors.

Speech Production

The complex process involving the coordination of mental and physical mechanisms to form and express language verbally.

Wernicke's Area

A region of the brain important for language development, located in the temporal lobe.

Dominant Hemisphere

Refers to the side of the brain that is primarily responsible for language and fine motor skills in most people, typically the left hemisphere for right-handed individuals.