Intervertebral foramen are formed by concavities on the______________ when the vertebral segments are stacked one on top of the other.

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BlackTom AI · Accepted Answer

To approach this question, I’ll examine what structures form the intervertebral foramina in the stacked vertebral column.
Option 1: Pedicles. The intervertebral foramen is formed by the superior notch of the pedicle of the vertebra above and the inferior notch of the pedicle of the vertebra below, creating an opening through which spinal nerves exit. This makes the pedicles the key bony components contributing to the foramen’s boundaries. 
Option 2: Laminae. The laminae form the posterior wall of the vertebral canal and contribute to the vertebral arch but are not the primary contributors to the intervertebral foramen’s superior and inferior boundaries. The foramen’s opening is not created by the laminae’s concavities. 
Option 3: Vertebral Bodies. The vertebral bodies are anterior elements connected by the intervertebral discs, and they contribute to the adjacent surfaces between vertebrae, not to the foraminal boundaries formed by the notches on pedicles. Thus, they do not define the intervertebral foramen. 
Option 4: Spinous Processes. The spinous processes extend posteriorly from the vertebral arch and do not participate in forming the intervertebral foramen’s borders. They are far posterior to the foramen and have no role in its concavity formation. 
Overall, the correct boundary of the intervertebral foramen arises from the concavities (notches) on the pedicles of adjacent vertebrae, which aligns with the statement in option 1. The other options misidentify the contributing structures and fail to describe the foraminal boundaries accurately.

2261 REHSCI 1200 SEC1010 Bonus Graded Quiz 7 (Optional)

Intervertebral foramen are formed by concavities on the______________ when the vertebral segments are stacked one on top of the other.

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