Thoracic Cage + Vertebral Column

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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.


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