The decrease in plasma volume and the increase in the osmolality of the plasma during exercise results in _________________ in antidiuretic hormone.
A) an increase
B) a decrease
C) no change

Question

Quizplus · Accepted Answer

During exercise, there is a decrease in plasma volume due to sweating and an increase in the osmolality of the plasma due to fluid loss. This stimulates the release of antidiuretic hormone (ADH) from the pituitary gland, which causes an increase in water reabsorption from the kidney tubules back into the bloodstream to help maintain blood volume and osmolality. Therefore, during exercise, there is an increase in ADH secretion.

The Decrease in Plasma Volume and the Increase in the Osmolality