TRansue-Lecture8

TRansue-Lecture8 - I. II. III. Circulation/Blood a....

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I. Circulation/Blood a. Circulatory Sytems i. Anatomy/circuits ii. Human Circ. Sys iii. Control of heart beat iv. Lymph system b. Blood pressure II. Blood a. Plasma b. Cellular components III. Immunity Atheroscelrosis/Arteriosclerosis Turbulent flow o Stiffer vessel – more likely to cause rips and tears (if calcified – less elasticity) Use cholesterol to fix rips and tears Atherosclerosis – harden process o Cholesterol gets deposited o Plaque build up decreases elasticity from cholesterol build up Cuts down diameter of lumen Turbulent flow is impeded o No elasticity increases peripheral resistance Plaque buildup Heart is working harder more tears positive feedback Artherioscleorsis o Depositing of calcium and makes it harder o Become rigid and lose elasticity Obesity Dramatically increases in peripheral resistance Fat vs muscle o Fat = more volume more vessels more surface area more peripheral resistance heart works harder (Blood pressure higher) How does blood get back to heart? (figure 42-20 p.827) Startling’s law of the heart! o
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TRansue-Lecture8 - I. II. III. Circulation/Blood a....

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