Human anatomy is far from complete, with ongoing discoveries reshaping understanding of variation, structure, and disease.

Leaf through a textbook, watch a wellness influencer or listen in at the gym, and it can feel as though the human body has already been mapped to exhaustion. Every muscle named, every nerve traced.

What’s so special about the human brain? What distinguishes the human brain from the brains of other animals? These intriguing questions have been approached from many directions, but here the focus ...