THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The arteries branch into smaller and smaller vessels, eventually becoming very small vessels called arterioles. Arteries and arterioles have muscular walls that can adjust their diameter to increase or decrease blood flow to a particular part of the body.

Detailed explanation-2: -Arteries and arterioles have thick muscular walls, while veins have a very thin muscular wall.

Detailed explanation-3: -Muscular arteries can be identified by the well-defined elastic lamina that lies between the tunicae intima and media. The splenic artery (lienal artery), the blood vessel that supplies oxygenated blood to the spleen, is an example of a muscular artery.