Uberon definition : In humans: 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. [WP,unvetted].;
In humans: 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. [WP,unvetted].