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).
Humans have 12 pairs of ribs that make up the rib cage. The rib cage belongs to the respiratory system and surrounds the lungs. As with most bones, the rib cage plays an important part in giving the human body its shape. The ribs support the chest cavity and give it shape. The rib cage holds the pectoral girdle up, supporting the shoulders. These bones are an integral piece of a humanâs core shape. Despite the biblical story of Adamâs missing rib, in most cases, both men and women have the same number of ribs.