I did a bunch of skeletal anatomy drawings for Anatomy class, and this one is my favorite. I think it's actually the best use of markers I've ever done. This picture of it takes out a little of the texture that's on the original, but for the most part it looks alright. I referenced this from several anatomy books that I have, combining the views.
I love the contrast on this, and the texture- it's prismacolor markers under a light layer of colored pencils, but the markers do most of the work. There are so many lovely complex colors in this. <3