accessory process ala of sacrum anterior arch of the atlas anterior sacral foramina anterior tubercle of cervical vertebra base of the sacrum body of sternum body of vertebra bone car accident cartilage centimetre cervical vertebrae chest coccyx comminuted costal cartilages costal groove dorsal surface of sacrum foramen transversarium head of rib heart human rib cage inferior costal facet intervertebral foramina lamina of the vertebral arch lateral mass of atlas lateral sacral crest lateral surface of sacrum lumbar vertebrae mammillary process manubrium medial sacral crest median sacral crest median sternotomy medical subject headings neck of rib ossification of sternum pectus carinatum pectus excavatum pedicle of vertebral arch pelvic surface of sacrum physical trauma posterior arch posterior sacral foramina posterior tubercle of cervical vertebra presacral space public domain pulmonary contusion rib sacral canal sacral hiatus sacral promontory sacral tuberosity sacrovertebral angle sacrum spinal canal spinous process steering column sternal angle sternal fracture sternocleidomastoid muscle superior costal facet suprasternal notch thoracic vertebrae torso transverse costal facet transverse processes vertebra vertebral arch vertebral foramen vertebral notch xiphisternal joint xiphoid process