The Tissue Series by Lisa Nilsson is so anatomically correct that it should be used in medical schools.
The human body is a complex system that scientists still don't fully understand, but somehow Nilsson has managed to recreate it using rolled-up bits of paper. Rolling the paper and putting it all together takes a few weeks because, when viewed up close, the organs have hundreds of tiny pieces. The artist's attention to detail is so precise that when viewed from far away, this piece could easily pass for a diagram from a textbook. Nilsson has now completed several projects using this technique including a brain, torso and even the head and shoulders of a human.
So if you're looking to learn some anatomy, study the Tissue Series by Lisa Nilsson for an up-close look.