Podcast
Questions and Answers
What structures close the vertebral canal anteriorly?
What structures close the vertebral canal anteriorly?
- Pedicles and laminae
- Thoracic ribs and intervertebral discs
- Ligamenta flava and facet joints
- Vertebral bodies, intervertebral discs, and posterior longitudinal ligament (correct)
Which structures bound the intervertebral foramina in the lumbar region?
Which structures bound the intervertebral foramina in the lumbar region?
- Lower part of a vertebra and the fourth ligamenta flava
- Upper part of a vertebra and its adjacent intervertebral disc (correct)
- Pedicles and anterior longitudinal ligament
- Facet joint and its capsule
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?
- It becomes progressively wider
- It remains consistent in size
- It fluctuates significantly in size
- It becomes progressively smaller (correct)
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?
What primarily occupies the lateral aspect of the vertebral canal?
What primarily occupies the lateral aspect of the vertebral canal?
Flashcards
Vertebral Canal Size
Vertebral Canal Size
The vertebral canal gets smaller from top to bottom.
Vertebral Canal Borders (Anterior)
Vertebral Canal Borders (Anterior)
The front of the vertebral canal is formed by vertebral bodies, intervertebral discs, and posterior longitudinal ligament.
Vertebral Canal Borders (Posterior)
Vertebral Canal Borders (Posterior)
The back of the canal is formed by laminae (thin plates) and ligamenta flava.
Intervertebral Foramina
Intervertebral Foramina
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Intervertebral Foramina (Thoracic)
Intervertebral Foramina (Thoracic)
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Intervertebral Foramina (Lumbar)
Intervertebral Foramina (Lumbar)
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Intervertebral Foramina (Cervical)
Intervertebral Foramina (Cervical)
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Pedicles (Structure)
Pedicles (Structure)
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Vertebral Canal (Function)
Vertebral Canal (Function)
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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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