Describe the following blood vessels: artery, vein and capillary.
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Solution
Blood vessels are tubular structures present throughout the body in which blood flows. There are three main types of blood vessels namely arteries, veins, and capillaries.
Arteries carry blood from the heart to different parts of bodies. Blood here flows in high pressure, so they are thick-walled. All arteries except pulmonary artery carry oxygenated blood.
Veins carry blood from different parts of the body to the heart. They are thin-walled than arteries. Except for the pulmonary vein, all veins carry deoxygenated blood.
Capillaries are the fine branching blood vessels that form a network between the arteries and veins.