Male Muscle Anatomy Sketch by Leonardo da Vinci Business Card

Muscles in a male body (c. 1510). Artist: Leonardo da Vinci (1452-1519). This sketch or drawing of internal human anatomy is a vintage Renaissance fine art science painting featuring the leg and back muscle structure of a man in profile. Sketch from one of Leonardo da Vinci's many journals. Leonardo kept a series of journals in which he wrote almost daily, as well as separate notes and sheets of observations, comments and plans which were left to various pupils and were later bound. Many of the journals have survived to illustrate Leonardo's studies, discoveries and inventions. Most of the journals were written backwards in mirror script. His journals were later published, 165 years after his death.