Good Links

2. Good Links • http://health.howstuffworks.com/human-body/systems/endocrine/adam-200091.htm • http://www.youtube.com/watch?v=8fh2HmdxQjQ • http://www.youtube.com/watch?v=1IQQPtyE7Lc&feature=related

3. Just the Facts • The endocrine and nervous system act individually and together in regulating an animal’s physiology • Endocrine system- all the hormone secreting cells and tissues. • Ductless • Hormones – chemical signals that cause a response in a target cell • Controlled by positive and negative feedback • Exocrine glands – ducted glands • Sweat • Oil

4. Hormones bind to: • Cell-surface receptors and a signal transduction pathway is triggered. • Intracellular receptors- lipid soluble, steroid hormones use this method – bind to a receptor that acts as a transcription factor and causes a gene to be expressed

6. Hypothalamus and pituitary integrate many functions of the vertebrate endocrine system. • Posterior pituitary • Oxytocin • ADH • Anterior Pituitary • FSH • LH • GH • Prolactin • TSH • ACTH

8. Thyroid Gland • Triiodithyronine • Thyroxine • Calcitonin

9. Parathyroid • Parathyroid Hormone

10. Pancreas • Insulin- Beta Cells of the Islets of Langerhan • Glucagon – Alpha Cells of the Islets of Langerhan

11. Adrenal Gland • Adrenal Medulla – secretes epinephrine and norepinephrine • Adrenal Cortex – secretes glucocorticoids • mineralocoroticoids

12. Gonads • Testes – Androgens – Testosterone • Ovaries – Estrogens, and Progesterone

13. Pineal • Melatonin – regulates body rhythms – light /dark cycles

14. Abnormal HormonesToo much or Too little GH Giantism Dwarfism

15. Thyroid gland Hyperthyroidism Hypothroidism

16. Adrenal gland Addison’s Disease Hypoadrenalism Cushing’s Hyperadrenalism