Another aspect of circulatory system anatomy is how blood vessels are named. The name will tell you where the blood vessel is found, oftentimes using the name of the bone it may lie above or using a medical term which describes the area of the body.
Blood vessels found on your forearm, for example, are called radial and ulnar, after the two bones that make up this part of your arm. The brachial region is your upper arm, with the principle blood vessels including this term in the name such as the brachial artery.
Your blood consists of liquid plasma, red blood cells, white blood cells, and platelets. Red blood cells carry oxygen to other cells in your body. White blood cells primary function is defense, whether it is an allergen that makes you sneeze or a disease-causing bacteria. Platelets promote clotting in case the closed system of your body is breached.
Your circulatory system anatomy is a complex system of two pumps, your atria and ventricles, and a network of blood vessels which move blood throughout your body. This small organ and its approximately 60,000 miles of blood vessels are a prime example of your body's efficiency.