The Antidiuretic Hormone Works on ____ That Encourages the Kidneys

Question

The antidiuretic hormone works on ____ that encourages the kidneys to reabsorb water.  
A) a positive feedback loop
B) a negative feedback loop
C) the proximal tubules of nephrons in the kidney
D) the action potential
E) the muscle tissue

Accepted Answer

The antidiuretic hormone (ADH) works through a negative feedback loop that encourages the kidneys to reabsorb water. When the body senses dehydration, ADH is released by the hypothalamus and travels to the kidneys. ADH stimulates the kidneys to reabsorb water from the urine, returning it to the bloodstream, thus reducing urine output and increasing overall blood volume. When the body is properly hydrated, ADH secretion decreases, and less water is reabsorbed, allowing for more urine production.