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1 of 20
Definition
Open right zygapophyseal joints
The right zygapophyseal joints of the lumbar vertebrae are not
demonstrated on the lateral projection.Objective: Detail the anatomy
best demonstrated on each essential projection of the vertebral
column.Reference: Module 9, Screen 2.8; Merrill's Atlas, vol. 1, pp.
471-472
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,1. What is the purpose of positioning the vertebral column in the
same plane during radiographic procedures?
o It reduces the likelihood of artifacts on the image.
o It reduces strain on the patient.
o It increases joint distortion to better demonstrate pathologic conditions.
o It opens the joint spaces and reduces distortion.
9. How is the central ray directed for the lateral projection of the thoracic
vertebrae when the vertebral column is supported in a horizontal plane that is
parallel to the image receptor?
o 10 to 15 degrees caudad
o Perpendicular
o 3 to 5 degrees caudad
o 10 to 15 degrees cephalad
6.All of the following structures are features of the cervical portion of the
vertebral column except:
o Mamillary processes
o Transverse foramina
o Vertebra prominens
o Bifid spinous processes
8.All of the following findings are demonstrated on the lateral projection of
the lumbar vertebrae except:
o Open right zygapophyseal joints
o Open intervertebral disk spaces
o Open intervertebral foramina
o Vertebral bodies in profile
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, 2 of 20
Definition
15 degrees cephalad
The AP axial sacrum requires the central ray to be directed at a 15-
degrees cephalic angle.Objective: Describe the procedural steps
required for each essential projection of the vertebral
column.Reference: Module 9, Screen 2.9; Merrill's Atlas, vol. 1, pp.
485-486
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2.What is the central ray orientation for the AP axial projection of the
cervical spine?
o 3 to 5 degrees cephalad
o 15 to 20 degrees caudad
o 15 to 20 degrees cephalad
o Perpendicular
2.What structures separate the vertebral bodies in the articulated spine?
o Zygapophyseal joints
o Vertebral foramina
o Intervertebral disks
o Intervertebral foramina
7. The AP axial projection of the sacrum requires the central ray to
be directed:
o 10 degrees cephalad
o 10 degrees caudad