Too much water?

1. Hypothalamus (part of brain) detects too much water in blood

2. Pituitary gland releases less ADH

3. Kidneys absorb more water from blood

4. More water reaches bladder and is lost through urine

5. Blood water level returns to normal

Too little water?

1. Hypothalamus detects too little water in blood

2. Pituitary gland releases more ADH

3. Kidneys absorb less water from blood

4. Less water reaches bladder and is lost through urine

5. Blood water level returns to normal