NEETZoologyExcretory Products and their Elimination
Which of the following physiological conditions most likely stimulates the release of Antidiuretic Hormone (ADH) from the neurohypophysis?
Options
- AAn increase in body fluid volume
- BAn excessive loss of fluid from the body
- CAn increase in blood pressure
- DA high intake of water
Correct answer
B. An excessive loss of fluid from the body
Step-by-step solution
Osmoreceptors in the body are activated by changes in blood volume, body fluid volume, and ionic concentration. An excessive loss of fluid from the body can activate these receptors, which stimulate the hypothalamus to release Antidiuretic Hormone (ADH) or vasopressin from the neurohypophysis. ADH facilitates water reabsorption from latter parts of the tubule, thereby preventing diuresis. An increase in body fluid volume or high intake of water switches off the osmoreceptors and suppresses ADH release to complete t