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Vertebral Canal and Intervertebral Foramina

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Vertebral Canal and Intervertebral Foramina

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Questions and Answers

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?

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?

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?

<p>Lower part of the vertebral body is included</p> Signup and view all the answers

What primarily occupies the lateral aspect of the vertebral canal?

<p>Pedicles</p> Signup and view all the answers

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.