Kinesiology 2230A/B Lecture Notes - Lecture 4: Fick'S Laws Of Diffusion, Blood Plasma, Blood Pressures
28 Jun 2017
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March 6th, 2017: radius any change in radius of the vasculature has a huge impact on pressure and change in flow. Length is related to height; the taller you are, the longer your vasculatures: long vasculatures reduce flow because resistance increases, ex: (picture, radius of b (rb) = 1; radius of a (ra) = 2. 4 = 24 (2x2x2x2) = 16 ra: we see a 16 time increase of flow in vessel a because the radius is larger tremendous increase in flow. If there is no change in the pressure that the heart is generating and you have a decrease in radius, that means flow to that particular area is going to decrease. Looking at how relatively small changes in radius will affect blood flow. If systolic pressures stay the same (120mmhg), flow is more than halved. In every heartbeat, it keeps stretching the artery: overtime, the diameter slowly starts to increase on the arterial side of circulation.
