The Beat Cowboy, a poster at the Craftster Forums, created this delightful anatomical guide to the "pouch-within-a-pouch structure of fetal membranes."
I made this 3 years ago for Embryology class, and I was inspired by the Knitted Digestive System to post it here. The concept is ripped off of Popples, those vaguely mammalian stuffed toys that 20-somethings might remember; they could turn inside-out with a little pouch-thing on their back, so that all you could see is their tail sticking out of a little ball.
Fetus Popple [Thanks, Joel!]
