BIOC33H3 Study Guide - Umbar, Suprascapular Notch, Sternal Angle

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The spinal column is also called the vertebral column. The bones in the spine are called vertebrae (ver-ta-bray). The column starts at the base of the skull and continues to the pelvis. Alternate layers of bone (vertebrae) and cartilage (car-til-ledge, the intervertebral discs) stack vertically one on top of the other in the spinal column. The lattice-like structure of the cancellous bone (cancel-lus, the spongy interior) in a vertebra absorbs external pressure. There are 12 vertebrae in the thoracic spine. They are labeled t1 through t12; the t stands for thoracic. You have more vertebrae in your thoracic spine than you do in any other spinal region. (the cervical spine the neck has 7 vertebrae, and the lumbar spine the low back. There"s also the sacrum and coccyx, which are 5 fused vertebrae and your tailbone. ) The thoracic spine extends from your shoulders to your waist. The thoracic spine is located in the chest area and contains 12 vertebrae.

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