the kidneys

• what do kidneys do?

  Filter blood and remove waste products
• what are the substances that are removed from the body?

  urea - proteins, and from the process deamination ammonia is produced which is toxic

  ions - when there is an imbalance in water and ions so water can't be draw in by osmosis

  water
• what is the process deamination?

  excess amino acids are converted to fats and carbohydrates which can be stored - this occurs in the liver
• what hormone controls the concentration of urine?

  anti-diuretic hormone
• the process of water content regulation is controlled by negative feedback
• the anti-diuretic hormone is released into the blood stream by the pituitary gland