1. What happens if there is a deficiency of parathyroid hormone? Lowered/below normal blood calcium Elevated blood phosphorus. This can be life threatening.

2. What happens if there is a deficiency of thyroxin? Iodine deficiency may develop. Swelling on neck (goiter). Still a problem in countries without iodized salt.

3. What happens if there is a deficiency in testosterone? Muscle degeneration Bone degeneration Underdeveloped genetalia Low energy

4. What happens when there is a deficiency of progesterone? Irregular and heavy bleeding; breast tenderness Hair loss

5. What happens if there is a deficiency of estrogen? Calcium and bone loss Blood clotting Stopping of menstrual cycles

6. What happens in there is a deficiency of insulin? Cannot control level of blood glucose and this can induce a coma

7. What happens if there is a deficiency of glucagon? Wasting syndrome Rash and skin lesions Fatigue

8. What happens if there is a deficiency of follicle stimulating hormone? No production of eggs/no pregnancy Irregular menstrual cycles

9. What happens if there is a deficiency in human growth hormone? Small stature Immature facial features

10. What happens if there is a deficiency of aldosterone A mild to severe loss of body Na+ Loss of Na+ through the urine Fatal electrolyte and water imbalance

11. What happens if there is a deficiency of antidiuretic hormone? Excessive thirst Very dilute urine

12. What happens when there is a deficiency of adrenaline? Excessive tiredness