Biology - Excretory Products and their Elimination Question with Solution | TestHub

Osmoreceptors in the body are activated by changes in blood volume, body fluid volume, and ionic concentration.

When there is an excessive loss of fluid from the body or when the blood becomes hyperosmotic, these receptors are stimulated. This stimulation causes the hypothalamus to release antidiuretic hormone (ADH), which facilitates water reabsorption and prevents diuresis.

Conversely, an increase in body fluid volume or when the blood becomes hypo-osmotic (diluted), the osmoreceptors are switched off or their activity decreases. This suppresses the release of ADH, completing the feedback loop and allowing excess water to be excreted.

Answer: hypo-osmotic