Final answer:
In response to dehydration, osmoreceptors stimulate the secretion of ADH, which helps prevent the loss of additional fluid in the urine and increases overall fluid levels in the body.
Step-by-step explanation:
In response to dehydration, osmoreceptors stimulate the secretion of ADH. ADH, also known as antidiuretic hormone, is produced by the hypothalamus and acts on the kidneys to reabsorb more water. This helps prevent the loss of additional fluid in the urine and increases overall fluid levels in the body.