Introduction
Blood pressure is a measure of the changing fluid pressure within the circulatory system. It varies from a peak pressure produced by contraction of the left ventricle, to a low pressure, which is maintained by closure of the aortic valve and elastic recoil of the arterial system. The peak pressure is called systole, and the pressure that is maintained even while the left ventricle is relaxing is called diastole.
Objectives
In this experiment, you will
- Obtain graphical representation of blood pressure.
- Compare blood pressure before and after exposure to cold stimulus.
- Observe an example of sympathetic nervous system activation (“fight or flight” response).
Sensors and Equipment
This experiment features the following sensors and equipment. Additional equipment may be required.
Ready to Experiment?
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Purchase the Lab Book
This experiment is #10A of Advanced Biology with Vernier. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.
