osmotic gradient

An osmotic gradient refers to the difference in concentration of substances, like salts or sugars, across a semi-permeable membrane. This difference causes water to move from the area of lower concentration to the area of higher concentration, aiming to balance the levels on both sides. It's essential for processes like the absorption of nutrients in our intestines and the regulation of water in our cells and kidneys. Essentially, the osmotic gradient drives water flow, helping maintain proper fluid and electrolyte balance in the body.