For orthopedic surgeons, there is not. It is a rigorous examination that covers the medical and musculoskeletal aspects of sports medicine. The two organizations that certify physicians are the American Board of Medical Specialties (ABMS), and the American Osteopathic Association (AOA) Bureau of Osteopathic Specialists.
An artery usually carries pure, filtered and clean blood away from the heart, to all the parts of the body with an exception of the pulmonary artery and the umbilical cord. As the arteries move away from the heart, they divide into smaller vessels. These thinner arteries are called arterioles.
It's bright red at this point. From your arteries, the blood flows through tiny blood vessels called capillaries, where it gives up its oxygen to the body's tissues. Your lips have a lot of these capillaries, which is why they're red.t's bright red at this point. From your arteries, the blood flows through tiny blood vessels called capillaries, where it gives up its oxygen to the body's tissues. Your lips have a lot of these capillaries, which is why they're red.