Lessons on the cervical, thoracic, lumbar, sacral, and coccygeal vertebrae.
The atlas bone is the first of seven cervical vertebrae. It supports the weight of the skull. The name for the bone was derived from a deity of Greek mythology called Atlas, who supported the heavens.
Inferior to the atlas bone is the second cervical vertebra, the axis bone. One of the it’s most prominent featuresis called “dens axis”.
Inferior to the atlas bone (C1) and axis bone (C2) are the remaining five cervical vertebrae (C3-C7). The vertebrae share many anatomical characteristics.
The twelve thoracic vertebrae make up the middle portion of the vertebral column. Review the anatomical characteristics of the vertebrae and test your knowledge.
The five lumbar vertebrae are located in the lower back and are noticeably larger and stronger than the other vertebrae.
The sacrum and coccyx bones sit inferior to the fifth lumbar vertebra. They are composed of individual vertebra that usually fuse during early adulthood.