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.
The smallest arteries are called Arterioles. Capillaries are a separate type of blood vessel, they are the smallest of the blood vessels. Capillaries are the very small vessels that send blood from arteries to veins in the body. 2  More active organs and tissues have more capillary networks. 3  Unlike veins and arterâ¦.