Sarah Yakawonis, a Portland based artist and designer, has created these and many more anatomical delights using a technique called quilling.
According to Wikipedia, quilling refers to “the use of strips of paper that are rolled, shaped, and glued together to create decorative designs. The paper is wound around a quill to create a basic coil shape. The paper is glued at the tip and the coil shaped, these shaped coils are arranged to form flowers, leaves, and various ornamental patterns similar to ironwork.”
I didn’t read anything about making badass anatomical art in there; apparently Yakawonis is a next level quiller. I am super impressed by all of her work, which you can check out on her website, yakawonis.com and on her blogspot.