Zusammenfassung der Ressource
Excretion
- The removal of toxic materials, the
waste products of metabolism &
substances in excess of requirement
- Waste Products
- Carbon Dioxide
- Produced by respiration
- Removed via the lungs
- Lactic Acid
- Urea
- Produced in the liver through
breakdown of amino acids
- Removed by the kidneys in urine
- Water
- Salts
- Produced by an excess in the diet
- Affects water potential in the blood
- Kidneys
- When blood passes through
the kidneys small molecules
are filtered out
- These are: Water,Glucose, Urea & Salt (ions)
- Some molecules are needed by the body so are
reabsorbed by the kidneys back into the blood
- These are: Glucose , some salts & some water
- Kidneys control the water balance in your body
- they change the amount of urine that you produce
- If you sweat a lot you will loose lots of
water so your body creates less urine