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Superior thoracic aperture
The vertebrae are segmented in descending order.Cervical, thoracic, lumbar, sacral , are the major segments.Neck, thorax ,upper back ,lower back.
It is inserted into the medial border of the scapula, between the superior angle and the triangular smooth surface at the apex of the spine. THE MUSCLES CONNECTING THE UPPER LIMB WITH THE VERTEBRAL COLUMN.
You don't have to have the same number Sometimes a lower rib doesn't develop on one or both sides. Sometimes a lower thoracic vertebral bone and an upper lumber vertebral bone just below it look so much alike you can't tell which kind is which -a Musculoskeletal Diagnostic Radiologist
Your thoracic cavity starts from the upper margin of the thoracic vertebra to upper margin of the manubrium of the sternum. There is your diaphragm on the lower side.
Upper thoracic region
7 Cervical Vertebrae12 Thoracic Vertebrae5 Lumbar Vertebrae5 Sacral Vertebrae3-5 Coccyx Vertebrae (although these are usually fused together)
yes
Posterior thoracic.
The thoracic vertebrae have several functions, but the two primary functions are as follows: 1) protect the spinal cord 2) serve as attachment points for the rib cage (which protects the vital organs)
Posterior thoracic.
The thoracic region is basically the chest and upper back. In the neck it begins at T-1 of the vertebra. The thoracic area extends to the last rib, front and back.