By SoulSurvivorsGaming, writer at creators.co. DC and Marvel have dominated the comic book industry for decades now, causing millions of people to have a beloved list of their favorite superheroes and characters from those universes. Characters including: Batman, Iron Man, Spider-Man, Superman and even Aqualad.
There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process. Arteries carry oxygenated blood away from the heart. Theyâre tough on the outside but they contain a smooth interior layer of epithelial cells that allows blood to flow easily.
There are 3 main kinds of blood vessels â arteries, veins and capillaries. 1  Arteries carry blood away from the heart. 2  The capillaries gradually join up with one another to form large vessels called veins. 3  Veins carry blood towards the heart. 71 Arteries, veins and capillaries-structure and functions. There are 3 main kinds of blood vessels â arteries, veins and capillaries. 1  Arteries carry blood away from the heart. 2  They divide again and again, and eventually form very tiny vessels called capillaries.