Twelfth rib

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Bone: Twelfth rib
Twelfth rib.
Sagittal section through posterior abdominal wall, showing the relations of the capsule of the kidney.
Gray's subject #28 126

The twelfth rib has a single articular facet on the head, which is of rather large size. It has no necks or tubercles, and is pointed at its anterior ends.

The twelfth has angle nor costal groove; it is much shorter than the eleventh rib, and its head is inclined slightly downward.

Sometimes the twelfth rib is even shorter than the first rib.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.