Which of the Following Describes How Antidiuretic Hormone (ADH) and the Renin-Angiotensin-Aldosterone

question 3

Multiple Choice

Which of the following describes how antidiuretic hormone (ADH) and the renin-angiotensin-aldosterone system (RAAS) work together to maintaining osmoregulatory homeostasis?

• A) ADH regulates the osmolarity of the blood by altering renal reabsorption of water, and the RAAS maintains the osmolarity of the blood by stimulating both Na+ and water reabsorption.
• B) ADH and the RAAS work antagonistically; ADH stimulates water reabsorption during dehydration, and the RAAS causes increased excretion of water when it is in excess in body fluids.
• C) Both stimulate the adrenal gland to secrete aldosterone, which increases both blood volume and pressure via its receptors in the urinary bladder.
• D) ADH and the RAAS combine at the receptor sites of proximal tubule cells, where reabsorption of essential nutrients takes place.

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