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Lab 27. The Endocrine System

Lab 27. The Endocrine System

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Lab 27. The Endocrine System

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  1. Lab 27. The Endocrine System

  2. Safety info • Read the two sheets (green and pink) • Sign the yellow sheet • Under 18? Please see me.

  3. Lab safety • First aid kit at the front • Fire extinguisher at the back • Eye wash at sink • Showers in the back

  4. Lab Safety • No eating or drinking in lab • Clean up rule: • It is your responsibility to clean up after yourself and put everything back like you found it

  5. Lab clean up • Put models back, like you found them • Put microscopes back • Put slides back in the proper box

  6. Lab clean up • Dispose of other items as follows: • Paper towels go in the trash • Broken glass and slide cover slips go in “broken glass” • Biological waste goes in red bucket • Empty slides get rinsed, dried, and returned to box • Dissection tools: put in wash • Wipe down your bench area when done

  7. Endocrine Organs

  8. Pituitary Gland

  9. Pituitary

  10. Pituitary Control

  11. Thyroid Gland Follicles: follicular cells surrounding lumen filled with thyroglobulinT3, T4 C Cells (parafollicular cells): Calcitonin

  12. Thyroid

  13. Parathyroid Gland Chief cells: Oxyphil cells

  14. Adrenal Glands

  15. Adrenal Glands • Cortex • Zona glomerulosa: mineralcorticoids • Zona fasciculata: glucocorticoids • Zona reticularis: sex steroids • Medulla: epinepherine and norepinepherine

  16. Pancreas

  17. Pancreas • Endocrine pancreas: • Islets of Langerhans • Alpha cells: glucagon • Beta cells: insulin • Exocrine pancreas: • Acinar cells: digestive juices, buffers

  18. Male Gonad:Testis Interstitial Cells: Secrete testosterone

  19. Female Gonad:Ovary Follicular cells: secrete estrogens As corpus luteum, secrete estrogen and progesterone

  20. Today’s Lab • Examine slides: • Thyroid gland • Parathyroid gland • Pancreas • Pituitary • Adrenal gland • Draw and label each tissue on paper provided • Complete review sheet • Due next week in lab (Thursday)