Da Vinci’s drawings and sketches were not the only reason to why he is an influential historic figure. There were observations, theories, and many of his ideas that he came across while studying. Anatomy was one of the many that he was interested in. Da Vinci had dissected many animals and cut up more than 30 corpses throughout his life while recording his observations in the form of drawings (bbc.com 3). With the corpses he had cut up, he was the first to accurately depict the human spine as well as a description of cirrhosis of the liver (bbc.com 3). During his investigations, the structure of the heart was so compelling to him that he discovered the heart has four chambers. Moreover, he stated that the heart is a cone-shaped and has a twist
