 Hyperfunction: too much hormone being produced  Hypofunction: not enough hormone being produced

 Hyperfunction of the pituitary so too much growth hormone is produced during childhood  Symptoms: ◦ Excessive height

 Hyperfunction of the pituitary so too much growth hormone is produced in adulthood  Symptoms: Overdevelopment of bones in the face, hands, and feet; protruding chin

 Hypofunction of the pituitary so not enough growth hormone is produced in childhood  Symptoms: Short stature

 Thyroid produces too much thyroxine  Symptoms: ◦ Goiter: Enlargement of the thyroid gland ◦ Exophthalmos: Bulging eyeballs

 Thyroid does not produce enough thyroxine  Symptoms: ◦ Obesity ◦ Dry, itchy skin ◦ Dry, brittle hair ◦ Muscle cramps

 Hyperfunction of the parathyroid causing it to produce too much parathyroid hormone  Decreased calcium levels effect the function of the nerves  Symptoms: ◦ Convulsive twitching develops ◦ Person dies due to spasms of the respiratory muscles

 Hyperfunction of the adrenal cortex which causes and increase in adrenocorticosteroids  Symptoms: ◦ Obesity ◦ Muscle weakness ◦ High blood pressure ◦ Excessive hair growth ◦ Buffalo hump

 Hypofunction of the adrenal cortex results in not enough adrendocorticosteriods produced  Symptoms: ◦ Bronzing of the skin ◦ Not enough glucose in the blood ◦ Low blood pressure

 Hypofuction of the pancreas causing a decrease in insulin production  Too much glucose is left in the blood  Symptoms: ◦ Increased hunger and thirst ◦ Increased urination ◦ Weight loss ◦ Blurred vision