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Lab 27. The Endocrine System

Lab 27. The Endocrine System. For Your Safety. Read the two sheets (green and pink) Sign the yellow sheet Under 18? Please see me . Sign out the microscope you will use this quarter. Lab safety. First aid kit at the front Fire extinguisher at the back Eye wash at sink

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Lab 27. The Endocrine System

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  1. Lab 27. The Endocrine System

  2. For Your Safety • Read the two sheets (green and pink) • Sign the yellow sheet • Under 18? Please see me. • Sign out the microscope you will use this quarter.

  3. Lab safety • First aid kit at the front • Fire extinguisher at the back • Eye wash at sink • Showers in the back • Anyone else “First Aid” certified?

  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 clean and where it belongs.

  5. Lab clean up • Put models back, as you found them • Put microscopes back • Put slides back in the proper box and correctly inserted. • (Another class comes in right after you – those students should not have to search for misplaced items!)

  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” container • Biological waste goes in red bucket: • Empty slides get rinsed, dried, and returned to box • Dissection tools: clean or put in wash • Wipe down your bench area when done

  7. MICROSCOPE SIGN UP • Sign in on the sheet next to you microscope number – • Use this same microscope for the quarter

  8. BIOLOGY TUTORING

  9. Endocrine Organs

  10. Pituitary Gland

  11. Pituitary • A • B • C

  12. Pituitary Control

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

  14. Thyroid

  15. Parathyroid Gland Chief cells: Oxyphil cells

  16. Adrenal Glands

  17. Adrenal Glands • Cortex • Zonaglomerulosa: mineralcorticoids • Zonafasciculata: glucocorticoids • Zonareticularis: sex steroids • Medulla: epinepherine and norepinepherine

  18. Pancreas

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

  20. Male Gonad:Testis Interstitial Cells: Secrete testosterone

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

  22. 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 (Monday)

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