Leonardo da Vinci began studying the human body to improve his paintings of the human form. But he soon threw himself into the study of anatomy. Here, an illustration of the cardiovascular system and major organs of a woman, drawn circa 1509-1510.
A drawing of a nude man from behind, c.1504-6, by Leonardo da Vinci.
Leonardo da Vinci was close to unraveling the mysteries of the circulatory system. This drawing of the major organs and circulatory system of a man was made between 1485 and 1490.
Leonardo da Vinci captured the delicacy of the hand in this series of sketches from around 1510.
Sketches of the shoulder and foot made by Leonardo da Vinci around 1510.
Leonardo da Vinci's journals contain notes, as well. Here, notes on the death of a centenarian, written in da Vinci's hand in about 1508.
A study of the digestive system made by Leonardo da Vinci.
A skull sectioned, 1489, by Leonardo da Vinci.
Leonardo da Vinci's studies of the coronary vessels and valves of the heart, c.1511-13
Leonardo da Vinci's sketches of a fetus in the womb, made between 1510 and 1513.