An artery or vein may become partially blocked or occluded, when a atherosclerotic plaque reduces the vessel radius over a small portion of its length,
a) Does the velocity in the occluded region change?
b) Does the pressure in the occluded region change?
c) Describe the possible sequence of events in the flexible vessel if the pressure
inside the vessel becomes very small compared to the pressure outside?
2007-03-12 21:59:05 · 2 answers · asked by clars 1 in Science & Mathematics ➔ Medicine
The velocity surely changes according to La Place's law. I believe that the pressure may change or not depending on the characteristics of the vessel (distensibility, aneurysm, etc.), A drop in the ratio of the pressures may cause the vessel to occlude if the wall thickness is low as in a vein or capillary.
2007-03-12 22:30:01 · answer #1 · answered by misoma5 7 · 0⤊ 0⤋
yes to a and b, possible sequence...increased blood pressure, complete occlusion...will lead to decreased blood supply leading possibly to cell death..
2007-03-12 22:09:46 · answer #2 · answered by ♦cat 6 · 0⤊ 0⤋