What's the significance of osmoregulation?

Osmoregulation plays a crucial role in preserving the balance of water and minerals within cells, thus helping the body maintain stable blood pressure levels. The kidneys control osmoregulation through the hormone antidiuretic hormone (ADH). ADH is produced by the hypothalamus and released by the posterior pituitary gland in response to changes in blood osmolarity. When blood osmolarity increases indicating dehydration or elevated solute concentrations, specialized cells in the hypothalamus detect this change and signal for the release of ADH. ADH then acts on the kidneys to increase water reabsorption in the collecting ducts of the nephrons. Oxygen enables kidney cells to produce energy in the form of ATP through aerobic respiration. The kidneys remove waste from the body and urine is expelled from the kidneys.