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Parietal bone

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The parietal bones (os parietale) are bones in the human skull and form, by their union, the sides and roof of the cranium. Each bone is irregularly quadrilateral in form, and has two surfaces, four borders, and four angles.

File:Gray 132 - Left parietal bone. Outer surface.png
Figure 1 : Left parietal bone. Outer surface.
File:Gray 133 - Left parietal bone. Inner surface.png
Figure 2 : Left parietal bone. Inner surface.