| Term | Definition |
|---|
| what is the function of the tunica intima? | endothelial layer protects the inside of the blood vessel |
| what is the function of the tunica media? | smooth muscle layer allows vessels to dilate and constrict |
| what is the function of the tunica adventitia? | connective tissue to connect vessel to surrounding tissue |
| how is blood supplied to the vessel? | through the vasa vasorum |
| what is the function of the arteries? | to carry blood away from the heart |
| what are the elastic arteries? | largest arteries, closest to the heart, tunica media is mostly elastic tissue so that it can withstand pressure |
| what are the muscular arteries? | come from elastic arteries tunica media is thick layer of smooth muscle to control blood flow |
| what are the arterioles? | connect smallest muscular arteries to capillaries, still have all 3 tunics |
| what is the structure of the capillaries? | made of only epithelium |
| what is the function of the capillaries? | gas exchange |
| what is the function of the veins? | to carry blood back to the heart |
| what are the venules and small veins? | also made of just endothelium, carry blood from capillaries to medium veins |
| what are the medium and large veins? | have all three tunics, but thinner smooth muscle layer than arteries |
| what are the valves? | in veins larger than 2 mm in diameter, folds in the tunica intima create valves; these valves stop the backflow of blood |
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