thoracic vertebrae :)
The ribs are attached posteriorly to the thoracic vertebrae of the spine through their articulation with the costal facets located on the bodies and transverse processes of the vertebrae. This connection allows for rib movement during breathing and provides structural support for the rib cage.
The ribs articulate posteriorly with the vertebrae at costal facets.Bethany S. Fl.
No, not all ribs directly articulate with the sternum. Ribs 1 to 7 directly articulate with the sternum, while ribs 8 to 10 indirectly articulate with the sternum through the costal cartilages of the ribs above them. Ribs 11 and 12 are floating ribs that do not articulate with the sternum at all.
the bottom 2 do not connect to anything, the rest join at the sternum or breastbone
The ribs articulate with the thoracic vertebrae.
Sacroiliac joint
The ribs articulate with the thoracic vertebrae. The thoracic vertebrae also articulate with each other.
In humans, there are 12 pairs of ribs. The first seven pairs, known as "true ribs," articulate directly with the sternum via costal cartilages. The 8th to 10th pairs, called "false ribs," articulate indirectly through the costal cartilage of the rib above. The 11th and 12th pairs, known as "floating ribs," do not articulate with the sternum at all.
The thoracic facets and demifacets articulate with the ribs, which form joints known as costovertebral joints. The facets on the thoracic vertebrae articulate with the heads of the ribs, while the demifacets articulate with the necks of the ribs.
The cervical and lumbar vertebrae do not articulate with the ribs. The thoracic vertebrae are the only ones that articulate with the ribs.
True ribs
Floating ribs (ribs 11 and 12) do not articulate with the sternum directly but are attached only to the thoracic vertebrae in the back. They are considered "floating" because they lack an attachment to the sternum or cartilage.