What portion of a vertebra articulates with the tubercle of the rib?

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Question restatement: What portion of a vertebra articulates with the tubercle of the rib?
Option 1: pedicle
Reasoning: The pedicle forms part of the vertebral arch connecting the body to the posterior elements, but it does not participate in rib articulation. It transmits forces between the vertebral body and the posterior elements and the adjacent vertebrae, not the rib tubercle.
Option 2: transverse process
Reasoning: The tubercle of a typical rib articulates with a facet on the transverse process of the corresponding vertebra, forming the costotransverse joint. This is the specific articulation asked about.
Option 3: spinous process
Reasoning: The spinous process projects posteriorly and serves as an attachment site for muscles and ligaments; it does not bear a joint surface for rib articulation with the tubercle. It is not involved in costotransverse articulation.
Option 4: lamina
Reasoning: The lamina forms part of the vertebral arch between the transverse process and the spinous process, but it does not carry a facet for rib articulation. It serves to protect the spinal canal and contribute to the arch structure, not to articulate with rib tubercles.
Option 5: Body
Reasoning: The vertebral body supports weight and articulates with intervertebral discs, but it does not receive the tubercle of a rib. Rib heads articulate with the vertebral bodies at the costovertebral joints, not the tubercles. Therefore, the body is not the correct articulation for the rib tubercle.

ANATOMY 2300 AU2025 (34636) Unit 3 Exam- Requires Respondus LockDown Browser

What portion of a vertebra articulates with the tubercle of the rib?

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