The system of blood vessels in the human body measure about 60,000 miles (96,560 kilometers). Arteries carry oxygen-rich blood from the heart through the body.

Learn all about the human body's many systems and some of its individual organs, both vital and vestigial. When you purchase through links on our site, we may earn an affiliate commission. Here ...

“Human: The World Within” explores how the body’s internal systems power human lives, telling the personal stories of people around the world and explaining the science of what’s happening ...

A groundbreaking discovery in the realm of ancient medicine has emerged from a 2,200-year-old tomb in southern China. Researchers uncovered a Chinese text on silk that could very well be the world’s ...