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I’m not sure if that picture worked or not but it’s a question from my textbook that was asking what factors would cause velocity of blood in an artery to decrease. It says in the answer at the bottom that apparently a lower pressure would Cause this, but I thought pressure and velocity were inversely related because of Bernoulli’s law?


closed as off-topic by stafusa, ZeroTheHero, Jon Custer, Sebastian Riese, glS May 30 '18 at 9:17

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The Bernoulli equation uses the energy of the fluid before and after traveling through different cross sectional areas. This is a link to a good explanation of the principle. In general, when a fluid's speed increases, its pressure decreases, that's why planes can fly so well, the lower pressure, faster moving air above the wing causes a net upward force called lift.


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