November 5, 2024

A Level Biology Revision (Year 13) “The Pancreas as an Endocrine and Exocrine Organ”

Author: Freesciencelessons via YouTube
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In this video, we look at the endocrine and exocrine roles of the pancreas. First, we explore the structure of the pancreas. We then look at how the pancreas acts as an exocrine organ by secreting enzymes into the digestive system. This includes the role of Acinar cells. Finally we look at how the pancreas acts as an endocrine organ by secreting insulin and glucagon. This includes the roles of the Islets of Langerhans, alpha cells and beta cells.

Image credits

Adult digestive system
https://commons.wikimedia.org/wiki/File:Adult_Digestive_System.png
BruceBlaus, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Pancreas
https://commons.wikimedia.org/wiki/File:Normal_pancreas_.jpg
ChocChocsugarsugar, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Islet of Langerhans
https://commons.wikimedia.org/wiki/File:Langerhanssche_Insel.jpg
User:Polarlys, CC BY-SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

Immunostained Islet of Langerhans
https://commons.wikimedia.org/wiki/File:Pancreaticislet.jpg
Masur, CC BY-SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons

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