beng100chapter8

beng100chapter8 - BENG 100 Frontiers of Biomedical...

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1 BENG 100 Frontiers of Biomedical Engineering Professor Mark Saltzman Chapter 8 SUMMARY • The cardiovascular system is comprised of a pump, the heart, which circulates a specialized fluid, blood, through an elaborate system of branched vessels. • The blood is a special fluid comprised of cells dispersed in a protein-rich fluid called plasma. White blood cells are involved in the inflammatory response and immune function; red blood cells transport oxygen to tissues. • The blood circulates in the body through a network of vessels including arteries, veins and capillaries. • Many of biophysical properties of the circulation can be deduced using a simple engineering model: fluid flow in a straight cylindrical tube. • The heart is equipped with a muscular wall that contracts to pump blood from its chambers (atria and ventricles) to other parts of the body. • The heart’s muscular wall is made up of self-excitable cardiac cells that contract in response to electrical stimulation. • The heart contracts rhythmically to create blood pressure, which drives blood flow.
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beng100chapter8 - BENG 100 Frontiers of Biomedical...

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