3 Hypo- vs. Hyper- Hypo – Hyper – Less than normal; deficient HyposecretionDeficient hormone secretionHyper –ExcessiveHypersecretionExcessive hormone secretion
4 Pituitary Gland Imbalances Hyposecretion of GH (Growth Hormone)DwarfismBody proportions still fairly normal but with a maximum height of 4 feetHypersecretion of GHGigantism8-9 feet is commonMost cases of hypersecretion results from a tumor of the affected gland
5 Thyroid Gland Imbalances Goiters (Hyposecretion)An enlargement of the thyroid due to an iodine deficiencyGraves’ Disease (Hypersecretion)High metabolic rateRapid heartbeatBulging eyes
6 Parathyroid Gland Imbalances HyposecretionLow blood calcium levels irritate neuronsIrritated neurons deliver rapid impulses to muscles causing uncontrollable spasmsHypersecretionMassive bone destructionBones become very fragile and spontaneous fractures occur
7 Adrenal Gland Imbalances Addison’s Disease (Hyposecretion)Peculiar bronze skin toneSodium and water are lost from the body causing muscle weaknessCushing SyndromeResults from a tumor on the adrenal cortexSymptoms include a wide “moon face” and a hump ion the upper back“Moon Face”“Buffalo Hump”
8 Quick Quiz Name one imbalance of the Parathyroid Gland. What is one symptom of Cushing Syndrome?Give the definitions of hypo- and hyper-.