He wanted to understand how the body was composed and how it worked. But at his death in 1519, his great treatise on the body was incomplete and his scientific papers were unpublished.
Based on what survives, clinical anatomists believe that Leonardo's anatomical work was hundreds of years ahead of its time, and in some respects it can still help us understand the body today.
So how do these drawings, sketched more than 500 years ago, compare to what digital imaging technology can tell us today?
Seen on Neatorama."