We lose water when we breathe out. via which organ is this water lost?
- how is water and ions controlled
- how do ions interact with water molecules
- how do ions get in water
- how ions get into water
5 factors that maintain water balance in the body.
Homeostasis in humans - Edexcel Importance of water balance in the body
Importance of water balance in the body
Osmoregulation is the control of water levels and mineral ions (salt) in the blood.
Water levels and mineral ions in the blood are controlled to keep the concentrations the same inside the cells as around them. This protects cells by stopping too much water from entering or leaving them by osmosis.
How is water lost from the body
If body cells lose or gain too much water, they do not function efficiently.
If the concentration of water is the same inside and out the cells, they remain in their normal state. If the water concentration is too high outside, water enters the cell by osmosisThe movement of water molecules across a selectively permeable membrane from a region of higher water concentration to a region of lower water concentration.
and they may burst.
On the other hand, if the water concentration is too low outside compared to the inside of the cells, water will leave by osmosis and the cells may shrivel.
If body cells lose or gain too much water by osmosis they do not
- how does water ionise
- how does water interact with ions