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Endocrine Lab

Endocrine Lab. Exercise 68. The endocrine system , acting with the nervous system, helps coordinate and integrate the activity of the body’s cells. Nervous system = electro-chemical Chemical “messengers” = neurotransmitters Endocrine system = chemical Chemical “messengers” = hormones

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Endocrine Lab

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  1. Endocrine Lab Exercise 68

  2. The endocrine system, acting with the nervous system, helps coordinate and integrate the activity of the body’s cells. • Nervous system = electro-chemical • Chemical “messengers” = neurotransmitters • Endocrine system = chemical • Chemical “messengers” = hormones Hormone (greek) meaning “to arouse”

  3. The Endocrine System • Uses chemical messages (hormones) that are released into the blood • Hormones control several major processes • Reproduction • Growth and development • Mobilization of body defenses • Maintenance of much of homeostasis • Regulation of metabolism

  4. Hormone Overview • Hormones are produced by specialized cells • Cells secrete hormones into extracellular fluids • Blood transfers hormones to target sites • These hormones regulate the activity of other cells

  5. Location of Major Endocrine Organs

  6. Pituitary Gland (Hypophysis) Anterior pituitary Posterior pituitary

  7. Histology of Pituitary Gland TSH, ACTH, FSH, LH GH, prolactin

  8. Parathyroid and Thyroid Glands

  9. Thyroid Gland

  10. Histology of Thyroid gland *Follicular Cells synthesize follicular products *Thyroglobulin is the stored form of T3 and T4 *C Cells produce calcitonin

  11. Parathyroid Gland

  12. Chief Cells Oxyphil Cells

  13. Thymus Gland trabeculae cortex medulla

  14. Thymus Gland Hassal’s corpuscle

  15. Adrenal Gland Modified sympathetic ganglion Mineralocorticoids “salt” Glucocortiocoids “sugar” Gonadocorticoids “sex”

  16. Pancreas (glucagon)

  17. Pancreasexocrine:aciniendocrine:islets of Langerhans

  18. Ovary

  19. Histology of Ovary Follicles = egg surrounded by granulosa cells

  20. Testes

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