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).
The ribs provide protection for vital organs in the upper body, including the heart and lungs. The ribs also help to protect major vessels in the upper body. There are twelve pairs of ribs, accounting for 24 total rib bones. The ribs are divided into the following three categories: true ribs, false ribs, and floating ribs. The primary differences are size, and how they connect to the front of the skeleton. Below is a more detailed description of the three categories.