Osmoreceptors in blood vessels detect excess water, leading to the release of antidiuretic hormone (ADH) from the posterior pituitary gland, which increases water reabsorption in the kidneys to maintain blood osmolarity.
Osmoreceptors in the blood vessels are specialized cells that monitor the concentration of solutes. When these osmoreceptors sense high blood osmolarity due to excess water, they signal the posterior pituitary gland to release antidiuretic hormone (ADH). ADH acts on the kidneys to increase water reabsorption, reducing urine production and helping maintain proper blood osmolarity.
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