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Questions and Answers
What structures close the vertebral canal anteriorly?
What structures close the vertebral canal anteriorly?
Which structures bound the intervertebral foramina in the lumbar region?
Which structures bound the intervertebral foramina in the lumbar region?
What is observed about the size of the vertebral canal as it descends?
What is observed about the size of the vertebral canal as it descends?
Which boundary is established in the cervical region regarding the anterior aspect of the intervertebral foramina?
Which boundary is established in the cervical region regarding the anterior aspect of the intervertebral foramina?
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What primarily occupies the lateral aspect of the vertebral canal?
What primarily occupies the lateral aspect of the vertebral canal?
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Study Notes
Vertebral Canal
- The vertebral canal narrows progressively from top to bottom.
- The canal is closed anteriorly by vertebral bodies and intervertebral discs, and posteriorly by laminae and ligamenta flava.
- Laterally, the canal is formed by pedicles, which are narrower than the height of vertebral bodies.
- Intervertebral foramina are formed between adjacent pedicles, defining the upper and lower boundaries of each foramen.
Intervertebral Foramina
- In the thoracic and lumbar regions, the front boundary of each intervertebral foramen is primarily the lower part of a vertebra's body and the intervertebral disc.
- In the thoracic region: Fig. 6.92
- In the lumbar region: Fig. 6.93
- The back boundary comes from the facet joint and its capsule.
- In the cervical region, a small portion of the vertebral body below the disc is included in the anterior boundary (Fig. 6.88).
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Description
Explore the anatomy and characteristics of the vertebral canal and intervertebral foramina. This quiz covers their structures, boundaries, and the differences across cervical, thoracic, and lumbar regions. Enhance your understanding of spinal anatomy and function.