All the images you find under the Anatomy heading are drawings I did for Life Drawing class and were referenced from the book, "Atlas of Human Anatomy for the Artist" by Stephen Rogers Peck. This drawing is of the male human torso and depicts all the different muscle groups. Done with a .05mm mechanical pencil on a 14" x 17" drawing pad. The image was too large to scan so I had to use a digital camera and hence the slight fuzziness of the background.