Physiology Challenge Questions

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probond007

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Hey guys so I have some challenging physiology questions. Right now we're doing cardio at my school and our professor gave us some good cardio questions. My friends and I already have some ideas about possible answers but we're looking to hear some other opinions as well. Here are the questions:

1.- What is the mechanism responsible for large artery pressure being higher that in the aorta?

2.- What is the mechanism for flow to move from the aorta to the large arteries?

3. What causes resistance to increase in a passive bed when blood pressure is decreased?

4. What would resistance be when blood pressure increases in a passive bed?
 
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