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There are two types of blood vessels in the circulatory system of the body: arteries that carry oxygenated blood from the heart to various parts of the body and veins that carry blood towards the heart for purification.hey are tiny branches of arteries that lead to capillaries and help maintain the pressure and blood flow in the body. Venous valves prevent blood from flowing in the opposite direction. Connective tissues make up the outermost layer of a vein which is also known as-tunica adventitia or tunica externa.
The three types of blood vessels are the arteries, veins, and capillaries. *Arteries are the vessels that carry blood away from your heart to the different parts of your body *Veins carries non-oxygenated blood to the heart *Capillary tubes with very thin walls which join arteries to veins.he Superior Vena Cava carries blood to the heart from the upper body, while the Inferior Vena Cava carries blood from the lower body. Another unique feature of veins is that they have valves. Like the valves in the heart, they are there to prevent a backflow of blood.