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Multiple Choice
C7 is referred to as the vertebra prominens because __________.
A
it has no intervertebral disc between it and the next vertebra
B
its spinous process is larger than those of the other cervical vertebrae
C
its spine is not bifid
D
of the presence of the dens
Verified step by step guidance
1
Understand the anatomy of the cervical vertebrae: The cervical spine consists of seven vertebrae, labeled C1 through C7. Each has unique features that distinguish them from one another.
Identify the unique feature of C7: C7 is known as the vertebra prominens. This is because it has a prominent spinous process that is easily palpable at the base of the neck.
Compare the spinous process of C7 with other cervical vertebrae: Unlike the other cervical vertebrae, which typically have bifid (split) spinous processes, C7 has a longer and more prominent spinous process that is not bifid.
Eliminate incorrect options: C7 does have an intervertebral disc between it and the next vertebra (T1), and it does not have the dens, which is a feature of C2 (the axis).
Conclude with the correct reason: The defining characteristic of C7 as the vertebra prominens is its larger and more prominent spinous process compared to other cervical vertebrae.