Axis -Human second cervical Vertebra or Spine
Second cervical vertebra, highly adapted to bear weight and yet remain mobile, co-apt with Axis in holding weight of our skulls. Death in judicial hanging occurs due to fracture of the Odentoid process in the center of this vertebra, called in medical parlance as the "hangman's fracture. A biological marvel machine. Part of my effort to preserve for posterity, public domain Classic human Anatomy images. Vectorized by the Author.