There are three primary types of blood vessels in the vascular system: arteries, veins, and capillaries.
Arteries: These vessels carry blood away from the heart. They have thick, muscular walls that can withstand high pressure. Veins: These vessels carry blood toward the heart. Veins have thinner walls and often contain valves to prevent the backflow of blood. Capillaries: These are the smallest blood vessels and are the sites of exchange between the blood and tissues.
