Role of the kidney in the process of osmoregulation:
- Osmo = osmosis, Regulation = control
- The tissue fluid surrounding the cells must be isotonic (amount of water going into and out of the cells are equal and the cells will remain the same size and shape and maintain their function) with the cytoplasm of the cells.
- The danger to the tissue is that blood circulating into the tissue would be concentrated causing a "hypertonic" tissue fluid or may be dilute causing a "hypotonic" tissue fluid.
- Need to keep the tissue fluid isotonic
- Achieved by controlling the composition of blood. Blood forms the tissue fluid.
- The kidney controls the composition of our blood.
- The kidney removes excess water and salts from the blood which circulates through our kidney and excreted.
- By controlling the content of water and salts in the blood, the tissue fluid surrounding the cells will be isotonic with the cytoplasm of the cells.
well written Lily
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