A Visual Introduction to Human Anatomy

Use the Visible Body Learn Site’s text, illustrations, and animations to learn and communicate basic human biology concepts. Enjoy!

The composition and function of blood in the human body

Functions of Blood: 8 Important Facts about Blood

Just how important is blood to the human body? It not only transports oxygen and other substances throughout the body, but it helps fight sickness. Did you know it also transports nutrients and hormones? Find out more facts about this living fluid.