JAMES STEVENSON / SCIENCE PHOTO LIBRARY. JAMES STEVENSON / SCIENCE PHOTO LIBRARY.
Photograph of the human atlas bone, the first cervical vertebra, and the top spinal bone in the neck which articulates with the occipital bone of the base of the skull. The atlas appears in superior aspect, with the posterior parts at top. In other words, one is looking down at the top of the bone, with the rear face at top of image.
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