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Insulin Regulation

Insulin Regulation. By Deborah Taylor. Insulin. A hormone Produced in the pancreas by the beta cells of the Islets of Langerhans Released when sugars are in the stomach It’s action is to allow glucose to enter the cells via the Glut 4 receptor. Action of Insulin.

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Insulin Regulation

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  1. Insulin Regulation By Deborah Taylor

  2. Insulin • A hormone • Produced in the pancreas by the beta cells of the Islets of Langerhans • Released when sugars are in the stomach • It’s action is to allow glucose to enter the cells via the Glut 4 receptor.

  3. Action of Insulin • This is a you tube file that explains the mechanism very well • http://youtu.be/jy4F-140upI • View this short animation before watching the Insulin Shock Video

  4. Diabetes mellitus • A disorder due to insulin imbalance • Type I – Insulin Dependent Diabetes – more serious – usually due to an autoimmune problem in the pancreas – used to be called Juvenile Diabetes – requires insulin injections • Type II – Non-insulin Dependent Diabetes – often due to insensitivity of tissues to insulin, can often be controlled with diet and exercise

  5. Overview of the Insulin Shock Lab • One fish will be the control. • The other fish will be exposed to insulin. • Both fish will be observed for behaviors and their activity will be recorded on the worksheet provided. • The insulin fish will be moved to glucose when it starts swimming on its side.

  6. Lab set up

  7. Questions to be able to answer • What did the fish that received insulin do in the first minute or so? • What did the insulin fish do after several minutes? • At what time was the insulin fish moved to the glucose solution? • What did the insulin do to the glucose? • Why did the fish behave as it did, when in insulin a minute or so and then later?

  8. View the Insulin Shock Lab • The video is in the lab folder and called Insulin Shock Lab • Record the activities of both fish during the entire lab video using the report sheet in your lab folder. • Turn in the report sheet in electronic format in the drop box for the “Insulin Lab”

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