Periodontal Ehlers-Danlos syndrome Periodontal EDS (pEDS) causes dental problems, particularly inflamed or absent gums and poor tooth development, on top of typical features of cEDS. It is rare but can be inherited from one parent only, as only one faulty gene is needed to develop the condition.
Ribs 1, 2, 11 and 12 can be describes as âatypicalâ â they have features that are not common to all the ribs. Rib 1 is shorter and wider than the other ribs. It only has one facet on its head for articulation with its corresponding vertebrae (there isnât a thoracic vertebrae above it).
In the Biblical story of Adam and Eve, God made Eve from one of Adam's ribs, and this is why the myth that men have one fewer rib than women begun. When the Flemish anatomist Vesalius identified the fact that both men and women had the same number of ribs in 1543 it set off a wave of controversy. Amazingly, the myth is still propagated today, over 450 years after it was disproven.