1. Characteristics of Elastic arteries(Conducting arteries) -largest arteries by diameter -contain more elastic fibers than smooth muscle -conduct blood from the heart to the more distant muscular arteries -pressure reservoirs 2. Muscular arteries(distributing arteries) -Distribute blood to various parts of the body -Contain large amounts of smooth muscle, most named arteries in the body fall into this category 3. Characteristics of Arterioles -smallest arteries by diameter -deliver blood to the capillaries, where gas and nutrient exchange can occur -Control amount of blood to various organs 4. Characteristics of Venules -smallest veins -collect blood from the capillaries -contain venous valves which prevent the backward flow of blood -attached to capillary bed