Biol 315 Lecture 22 Review Checklist Know the hierarchy of blood vessels, from largest to smallest [Hint: start at the heart with elastic arteries , then work your way around the cardiovascular circuit back to the heart]. functions of these layers. Be able to compare and contrast arteries and veins in terms of wall thickness, lumen size, layer sizes, etc. Know the characteristics and functions of elastic arteries and muscular arteries . What is atherosclerosis ? What mechanisms (chain of events) are thought to produce it? What is the function of valves within veins? Given that veins have less smooth muscle than arteries and that venous blood pressure is lower, what mechanisms assist in moving blood through veins to the heart? What are varicose veins ? Be able to describe some structural characteristics of
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