Excretion Homeostasis Describe the role of the kidney in osmoregulation

The kidney plays a central role in osmoregulation by maintaining the body's water and salt balance. It achieves this by filtering blood in the nephrons, then selectively reabsorbing water and essential solutes back into the bloodstream. The amount of water reabsorbed is precisely controlled by hormones like Antidiuretic Hormone (ADH), which adjusts the permeability of the collecting ducts. This process ensures that the concentration of solutes in the body fluids remains stable, preventing dehydration or overhydration.