Distinguishing characteristics 2. Articulations of sacrum 2. Median sacral crest is continuous with the spinous processes.
Sacral canal is an opening continuous with the vertebral canal.
Sacral foramina allow for exiting nerves and blood vessels. Sacral hiatus is a large opening formed by the lack of fusion of the lamina of last vertebrae E. Coccyx 1. Ribs B. Ribs - 12 ribs 1. True and false ribs 2.