If by Bernoulli's, speed and pressure are inversely related, why is it that the aorta has such high velocity and high pressure? By extension, the capillaries have very slow speed, so why do they have such low pressure? Thanks for all your videos!
Thanks for the nuanced question! For the MCAT, I think they are much more concerned about the relationship Q = A1V1 = A2V2, where Q = flow, A = cross-sectional area, and v = linear velocity. The aorta actually has a very low cross-sectional area compared to the total cross-sectional area of all of the capillaries in our body, so the velocity of the fluid there will be much higher. In summary, that's the concept that you should have imprinted in your brain for the MCAT and for your future career when thinking about hemodynamics. As to your question, I am looking into it! It is not straightforward at all. The best explanation I found was the 2nd answer in this forum: biology.stackexchange.com/questions/36443/how-does-bernoulli-s-principle-apply-to-the-cardiovascular-system
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If by Bernoulli's, speed and pressure are inversely related, why is it that the aorta has such high velocity and high pressure? By extension, the capillaries have very slow speed, so why do they have such low pressure? Thanks for all your videos!
Thanks for the nuanced question!
For the MCAT, I think they are much more concerned about the relationship Q = A1V1 = A2V2, where Q = flow, A = cross-sectional area, and v = linear velocity. The aorta actually has a very low cross-sectional area compared to the total cross-sectional area of all of the capillaries in our body, so the velocity of the fluid there will be much higher. In summary, that's the concept that you should have imprinted in your brain for the MCAT and for your future career when thinking about hemodynamics.
As to your question, I am looking into it! It is not straightforward at all. The best explanation I found was the 2nd answer in this forum: biology.stackexchange.com/questions/36443/how-does-bernoulli-s-principle-apply-to-the-cardiovascular-system