Download Endocrine and Exocrine

ENDOCRINE AND EXOCRINE
A lesson on both of the systems and their functions
LESSON PLAN
1. Walkthrough PowerPoint.
2. Show and explain model.
3. Answer any questions.
4. Hand out and work on worksheet.
EXOCRINE SYSTEM
•
Glands that contain ducts.
•
Contain a glandular portion and a
duct portion.
•
Three ways of secretion.
WAYS OF SECRETION:
MEROCRINE
• Cells excrete their substances by exocytosis.
• Membrane-bound secretory vesicles internal to the cell.
• Example: Pancreatic acinar cells.
WAYS OF SECRETION:
APOCRINE
•
Portion of the plasma membrane buds off the cell
•
Results in a secretory product that contains a variety of
molecular components including those of the membrane.
•
Example: Mammary Gland
WAYS OF SECRETION:
HOLOCRINE
•
The entire cell disintegrates to excrete its substance.
•
The secretory cell is released and it breaks apart.
•
This mode of secretion results in the most complex secretory
product.
ENDOCRINE SYSTEM
•
Hormone producing structures of the
body.
•
Some, like the thyroid are large and
obvious.
•
In lacking ducts, endocrine cells
release their secretory products into
the spaces around the cells.
•
Cell that product is headed towards
is the target cell.
THE PANCREAS
• Serving as the Exocrine System:
• The pancreas excretes enzymes to break down
the proteins, lipids, carbohydrates, and nucleic
acids in food.
• Serving as the Endocrine System:
• The pancreas secretes the hormones insulin and
glucagon to control blood sugar levels throughout
the day.
DISEASES INCLUDED IN MAJOR
GLANDS/ORGANS
• Pancreatic Cancer
• A malignant neoplasm originating from transformed cells arising in tissues forming
the pancreas.
• Endocrine gland hyposecretion
• Hyposecretion of hormones
• Endocrine gland hypersecretion
• Over production of hormones
• Exocrine pancreatic insufficiency (EPI)
• Caused by a degenerative disease of the pancreas.
Does Anyone Have
Any Questions?
CREATED BY:
Brooke Mentel
and
Nic Peña
BIBLIOGRAPHY
• "Pancreatic Diseases: MedlinePlus." U.S National Library of Medicine. U.S.
National Library of Medicine, n.d. Web. 10 Mar. 2014.
• "Endocrine Glands: MedlinePlus Medical Encyclopedia." U.S National Library
of Medicine. U.S. National Library of Medicine, n.d. Web. 12 Mar. 2014.
• "Exocrine." Exocrine. N.p., n.d. Web. 12 Mar. 2014.
• "Endocrinology." UCSF Medical Center. N.p., n.d. Web. 12 Mar. 2014.