Transcript
Control of Homeostasis &
Heart RateAlso known as “The Blackworm Lab”
Ilana SaxeThe Lawrenceville School
Each lab station will have:
Depressionslides
counter
Cover slips
Lens paper
The scalpel is for cutting the end of the transfer pipette (you can also use scissors), remember to use a cover slip to trim the ends
of the worm.
Chemicals: You will test one chemical, three times and share your data with
the class.
Blackworm Holding Tanks
Trim the end of the transfer pipette to make it wider. This will make it easier to transfer the worms into the
60mm petri dish
Blackworms in a 60 mm petri dish
Once you have placed a blackworm on a flat slide,
removed the head and tail, and then placed it back on a depression
slide, under the microscope, you should
see this…
Segment of a Blackworm under the microscope
When you count the pulse chose one segment and count the number of times a wave passes through that specific point. For example, you might choose to focus here:
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