BIO220H1 Chapter 14: Chapter 14 - chapter notes.

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21 Jun 2011
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BIO220H1 Full Course Notes
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BIO220H1 Full Course Notes
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Chapter 14: the cardiovascular system: blood vessels, blood. P = size of pressure gradient force that pushes the flow of liquid thru pipe. R = resistance hinder the flow of liquid thru pipe. How pressure gradients and resistance affect blood flow in individual vessels and network of vessels. pressure gradient drives the flow from region of higher pressure to lower pressure, down the pressure gradient. The role of pressure gradients in d riving blood flow. By pumping blood into the arteries heart raises arterial pressure (figure 14. 1) rel. bet. pressure and flow in blood vessels. Hydrostatic column vertical distance from the vessel to surface of liq. That determines the pressure at either end of the vessel. The deeper you go the more pressure the h2o exerts on your body. If difference between levels are constant as in fig. in sys. circuit map mean arterial pressure = 85mm.