Thoracic Cage + Vertebral Column
True Ribs
R1-R7 pairs. these Articulate Directly with the Sternum by way of Costal Cartilage
Floating Ribs
11th and 12th pair of ribs that do not connect to either the sternum or another pair of ribs anteriorly; they are attached posteriorly to the verterbra and are free and palable
Thoracic Vertabrae
12 total, numbered T1-T12, larger than cervical, longer papable spinous process, and ribs attach here
Lumbar Vertabrae
5 total, numbered L1-L5, huge bodies and short spinous processes, holds most of the body weight and tress, very sturdy
cervical vertabrae
7 total numbered C1-C7, smallest and lightest vertebrae, and its uniqe for its atlas and axis
False Ribs
8-10 connected to vertebrae but not sternum, connect to cartilage of 7 rib above
Ribs
Vertebrosternal = 'True ribs" -ribs 1-7 attach directly to the sternum through their costal cartilage. Vertebrochondral = "False ribs" =ribs 8-10 costal cartilage articulate indirectly with the sternumb by joing the costal cartilages of ribs above. Vertebral Ribs = "Floating ribs" ribs 11 and 12 no anterior attachment.
Sternum
consists of manubrium, a body and a xiphoid process (most inferior portion of the sternum)...also known as the breastbone
Manubrium, Body, Xiphoid Process
triangular shaped region. articulates with the clavicles of the appendicular skeleton and with the cartilages of the first pair of ribs.