Organ is a more broad term that is used to describe a group of tissues that structurally form a functioning, specialized unit of the human anatomy. Since arteries are made up of tissue ...

The BBC is not responsible for the content of external websites BBC SCIENCE is provided for general information only, and should not be treated as a substitute for the medical advice of your own ...

Leonardo da Vinci began studying the human body to improve ... into the study of anatomy. Here, an illustration of the cardiovascular system and major organs of a woman, drawn circa 1509-1510.