How Does ADH Work and What Does It Do

question 23

Multiple Choice

How does ADH work and what does it do?

• A) It binds to water molecules, making them too large to diffuse out of the blood stream, retaining water when the body needs it.
• B) It binds to blood cells, making them more porous to water so it more easily diffuses back into them and is not lost in urine filtration.
• C) It binds to the kidney tubules, making them less porous to water so less water filters out.
• D) It binds to nerve cells in hypothalamus, signaling that the body is dehydrated and should retain water.
• E) It binds to the collecting tubules in the kidney, opening pores to allow water to flow back out of the kidney into the blood.

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Definitions:

Stress

A condition of psychological stress or pressure stemming from difficult or challenging situations.

Symptoms

Physical or mental features indicating a condition or disease, experienced by an individual.

Disease

A disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or affects a specific location and is not simply a direct result of physical injury.

Differential Diagnosis

A process by which a doctor distinguishes between diseases with similar symptoms to identify the patient's specific illness.