LRA 225/226 Skull Final Review UPDATED ACTUAL
Questions and CORRECT Answers
What cranial projection will best demonstrate a possible Lateral- Horizontal Beam
basilar fracture?
What change/errors are present on this lateral skull None, this is an acceptable image
radiograph?
What positioning line is perpendicular to the IR for a OML
Towne?
Why is the chin extended for an axiolateral oblique To prevent superimposition upon the cervical spine
projection of the mandible?
Part 3 is part of which bone? Ethmoid
"____blank____" is a break in the structure of a bone caused Fracture
by a direct or indirect force
What projection of the skull requires the sagittal plane to Lateral
be parallel to the image receptor (IR) and the inter
pupillary line to be perpendicular to the IR?
How many cranial bones are there? 8
Where does the CR exit for a PA skull? Glabella
Where do the petrous pyramids lie in a PA skull? Fills the orbits
What positioning line is perpendicular to the IR for a OML
Caldwell projection?
Describe where the tympanic membrane is:
Questions and CORRECT Answers
What cranial projection will best demonstrate a possible Lateral- Horizontal Beam
basilar fracture?
What change/errors are present on this lateral skull None, this is an acceptable image
radiograph?
What positioning line is perpendicular to the IR for a OML
Towne?
Why is the chin extended for an axiolateral oblique To prevent superimposition upon the cervical spine
projection of the mandible?
Part 3 is part of which bone? Ethmoid
"____blank____" is a break in the structure of a bone caused Fracture
by a direct or indirect force
What projection of the skull requires the sagittal plane to Lateral
be parallel to the image receptor (IR) and the inter
pupillary line to be perpendicular to the IR?
How many cranial bones are there? 8
Where does the CR exit for a PA skull? Glabella
Where do the petrous pyramids lie in a PA skull? Fills the orbits
What positioning line is perpendicular to the IR for a OML
Caldwell projection?
Describe where the tympanic membrane is:
