By Deborah Taylor
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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.
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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
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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
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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.
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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?
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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”