Lab 9: Endocrine System. Review. Where does pepsinogen come from? Why doesn’t the stomach digest itself? Why can Veggans not eat meat anymore?. Function. Maintain Homeostasis (Balance) Communicates and coordinates physiological responses Example of Imbalance?. DVD clip Battling A Giant.
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Lab 9: Endocrine System
Zona Glomerulosa: Outer layer
Zona Fasciculata: Middle Layer
Zona Reticularis- Inner Layer
Location- 2 glands one superior to each Kidney.
Mineralocorticoids- Regulate Kidney Na+ and K+ excretion
Glucocorticoids- Stress and immune supression
Sex steroids- androgens precursor to sex hormones
Medulla- (Fight or Flight Response) Epinepherine and Norepinephrine
Location- Inferior and posterior to Stomach
Clusters of endocrine cells
Function- Glucose Regulation
T4 & T3
Children: mental retardation, development abnormalities
Adults: lethargy, obesity
Hyperthyroidism (Graves’ Disease)
Weight loss, sweating, nervousness, sleeplessness
-----a hypertrophy of the thyroid gland resulting from iodine deficiency
Pituitary Dwarfism- Insufficient secretion of Growth Hormone
Gigantism- Over-secretion of Growth Hormone