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1.  Why do you think body position has an affect on blood pressure & heart rate?  Is this direct or via neutral control?
2.  What causes the sound of the heartbeat?
3.  What are the 3 main waves in an EKG & what do they represent?
4.  How are veins different from arteries in structure & function?
5.  What is the purpose of plotting EKG amplitudes in Einthovens triangle?


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2.  What causes the sound of the heartbeat?

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