Lab 27 the endocrine system
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Lab 27. The Endocrine System. Safety info. Read the two sheets (green and pink) Sign the yellow sheet Under 18? Please see me. Lab safety. First aid kit at the front Fire extinguisher at the back Eye wash at sink Showers in the back. Lab Safety. No eating or drinking in lab

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Safety info l.jpg
Safety info

  • Read the two sheets (green and pink)

  • Sign the yellow sheet

  • Under 18? Please see me.


Lab safety l.jpg
Lab safety

  • First aid kit at the front

  • Fire extinguisher at the back

  • Eye wash at sink

  • Showers in the back


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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


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Lab clean up

  • Put models back, like you found them

  • Put microscopes back

  • Put slides back in the proper box


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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






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Thyroid Gland

Follicles: follicular cells surrounding lumen filled with thyroglobulinT3, T4

C Cells (parafollicular cells): Calcitonin



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Parathyroid Gland

Chief cells:

Oxyphil cells



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Adrenal Glands

  • Cortex

    • Zona glomerulosa: mineralcorticoids

    • Zona fasciculata: glucocorticoids

    • Zona reticularis: sex steroids

  • Medulla: epinepherine and norepinepherine



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Pancreas

  • Endocrine pancreas:

    • Islets of Langerhans

      • Alpha cells: glucagon

      • Beta cells: insulin

  • Exocrine pancreas:

    • Acinar cells: digestive

      juices, buffers


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Male Gonad:Testis

Interstitial Cells:

Secrete testosterone


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Female Gonad:Ovary

Follicular cells: secrete estrogens

As corpus luteum, secrete estrogen and progesterone


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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)


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