2.68b Osmoregulation

understand how the kidney carries out it's role of excretion and osmoregulation.

Osmoregulation: Control of Osmosis
fluids surrounding cells must be isotonic with the cytoplasm of the cells.
meaning the amount of water going in and out of the cells are equal.

threats include concentrated tissue fluid (hypertonic) or dilute tissue fluid (hypotonic)

kidneys can regulate the amount of water and salts in the blood to make sure the cells remain isotonic