Unique case of absence of the anterior arch of the atlas.
Piersol, George A. Human Anatomy (Philadelphia, PA: J. B. Lippincott Company, 1908)
TIFF (full resolution)
2400×1245, 1.4 MiB
Large GIF
1024×531, 159.0 KiB
Medium GIF
640×332, 73.9 KiB
Small GIF
320×166, 23.3 KiB