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31 votes
31 votes
How would blood flow be affected if the aorta decreased in diameter?

User Ian Hatch
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1 Answer

14 votes
14 votes

Answer:

A decreased diameter means more of the blood contacts the vessel wall, and resistance increases, subsequently decreasing flow. The influence of lumen diameter on resistance is dramatic: A slight increase or decrease in diameter causes a huge decrease or increase in resistance.

User Mdmb
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