Final answer:
The sacral and coccygeal regions of the vertebral column lack foramen or canals due to the fusion of the vertebrae in these regions, resulting in a solid structure.
Step-by-step explanation:
The region of the vertebral column where no foramen or canals are present is in the sacral and coccygeal regions. These regions consist of the five sacral vertebrae which are fused together and the four coccygeal vertebrae, also fused, forming the sacrum and coccyx, respectively. Unlike the cervical, thoracic, and lumbar regions, where the vertebral foramen allows passage for the spinal cord and the intervertebral foramina for nerve roots, the sacrum's vertebral canals and foramen are absent due to the fusion of the vertebrae, making one solid structure without channels for nerves.