lab 27. the endocrine system
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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 - PowerPoint PPT PresentationTRANSCRIPT
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• Showers in the back• Anyone else “First Aid” certified?
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.
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!)
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
MICROSCOPE SIGN UP• Sign in on the sheet next to you
microscope number – • Use this same microscope for the quarter
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.
Endocrine Organs
Pituitary Gland
Pituitary• A• B• C
Pituitary Control
Thyroid Gland
Follicles: follicular cells surrounding lumen filled with thyroglobulin T3, T4
C Cells (parafollicular cells): Calcitonin
Thyroid
Parathyroid Gland
Chief cells: Oxyphil cells
Adrenal Glands
Adrenal Glands• Cortex
– Zona glomerulosa: mineralcorticoids– Zona fasciculata: glucocorticoids– Zona reticularis: sex steroids
• Medulla: epinepherine and norepinepherine
Pancreas
Pancreas• Endocrine pancreas:
– Islets of Langerhans• Alpha cells: glucagon• Beta cells: insulin
• Exocrine pancreas:– Acinar cells: digestive juices, buffers
Interstitial Cells:
Secrete testosterone
Male Gonad:Testis
Follicular cells: secrete estrogens
As corpus luteum, secrete estrogen and progesterone
Female Gonad:Ovary
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)