An AP atlas and axis projection with accurate positioning demonstrates
1)the axis's spinous process aligned with its body midline.
2)an open atlantoaxial joint.
3)the upper incisors and posterior occiput superior to the dens.
4)the first through fourth cervical vertebrae.
A) 1 and 3 only
B) 2 only
C) 1, 2, and 3 only
D) 1, 2, 3, and 4

Question

Quizplus · Accepted Answer

The positioning described in option 1 and 3 are accurate for an AP atlas and axis projection, and an open atlantoaxial joint is also visible in this view. Option 4 is also accurate as the first through fourth cervical vertebrae are visible in this projection.

An AP Atlas and Axis Projection with Accurate Positioning Demonstrates