Download - Lab 27. The Endocrine System
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Lab 27. The Endocrine System
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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.
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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?
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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 clean and where it belongs.
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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!)
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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” 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
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MICROSCOPE SIGN UP• Sign in on the sheet next to you
microscope number – • Use this same microscope for the quarter
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BIOLOGY TUTORINGMonday 2-6 pmAS 1615
Tuesday2-6 pmAS 1615
Wednesday2-6 pmAS 1615
Thursday2-6 pmAS 1615
Friday 12-4 pmAS 1615
Saturday10-2pmAS 1614
MikeA&P
MoiraGen. Bio.Majs. Bio.
DavidA&P, MicroGen. Bio.Majs. Bio.
DavidA&P, MicroGen. Bio.Majs. Bio.
RayA&P, Micro
MoiraGen. Bio.Majs. Bio.
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Endocrine Organs
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Pituitary Gland
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Pituitary• A• B• C
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Pituitary Control
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Thyroid Gland
Follicles: follicular cells surrounding lumen filled with thyroglobulin T3, T4
C Cells (parafollicular cells): Calcitonin
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Thyroid
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Parathyroid Gland
Chief cells: Oxyphil cells
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Adrenal Glands
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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
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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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Interstitial Cells:
Secrete testosterone
Male Gonad:Testis
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Follicular cells: secrete estrogens
As corpus luteum, secrete estrogen and progesterone
Female Gonad:Ovary
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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 (Monday)