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wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis
The lower part of the sternum that project downward to the point where the sternum meets the lower ribs.
second set of 12 vertebrae; they articulate with the 12 pairs of ribs to form the outward curve of the spine
the structure of the vertebrate skeleton supporting the lower limbs in humans and the hind limbs or corresponding parts in other vertebrates
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