Which two cervical vertebrae have spinous processes that protrude more posteriorly and are more distinct?

• A. C1 and C2
• B. C2 and C7
• C. C3 and C5
• D. C4 and C6

Answer: (B)

The key idea is how the spinous processes of the cervical vertebrae vary in how much they protrude and how easy they are to feel. Most cervical spines are short and often not very prominent to touch, with the exception of two that stand out. The vertebra prominens, which is the seventh cervical vertebra, has a long, prominent spinous process that sticks out at the base of the neck and is easy to feel. The axis, or second cervical vertebra, also has a relatively prominent spinous process compared with the mid‑cervical vertebrae, helping it to be felt as a noticeable bump along the back of the neck. Because of these distinctive, posteriorly projecting spines, they’re easier to identify by touch than the others in the region. That’s why these two are the best match.