Choose a historic steam train or one of our eco-friendly biodiesel locomotives for your train ride on the only Cog Railway East of the Rockies! Advance booking is recommended. Check our train schedule here. Download Cog RW Brochure [1.32 MB pdf]
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.
All three are types of blood vessels. Arteries carry freshly-oxygenated blood away from the heart and supply it to organs and other parts of the body that need oxygen. Veins carry oxygen-depleted blood back to the heart.Capillaries are tiny blood vessels that branch off from arteries and veins, and that most closely interact with tissue to supply oxygen to them (or carry oxygen-depleted blood away from them).Mark H Â· 9 years ago.eins carry oxygen-depleted blood back to the heart. Capillaries are tiny blood vessels that branch off from arteries and veins, and that most closely interact with tissue to supply oxygen to them (or carry oxygen-depleted blood away from them). Mark H Â· 9 years ago.