Position Yo Face

1. Which facial bones are sometimes called the "cheeck bones"

Maxilla

Zygoma

Lacrimal

Mandible

2. An infection of the teeth may travel upward and involve the ______sinus

Ethmoid

Maxillary

Frontal

Sphenoid

3. The common basic PA axial projection for facial bones requires a 15 degree caudad angle of the CR which projects the dense petrous ridges into the lower one-third of the orbits.

True

False

4. Which facial bone structures are best seen with a parietoacanthial projection?

Orbits, bony nasal septum, maxilla, zygoma

Lacrimal, palatine, maxilla, zygoma

Orbits, frontal, lacrimal, zygoma

5. What is the proper method name for the parietacanthial projection of the facial bones?

Townes

Rhese

Caldwell

Waters

6. What CR angle must be used to project the petrous ridges just below the orbital floor with the PA axial (Caldwell method) prjection?

None, CR is perpendicular

30 degrees

20 degrees

45 degrees

7. Facial bone studies should always be performed recumbent whenever possible

True

False

Erect

Explanation

Erect

8. Where is the CR centered for a lateral position for facial bones?

Outer canthus

Acanthion

Zygoma

Nasion

9. From anterior to posterior, the cone-shaped orbits project upward at an angle of degrees and toward the midsagittal plant at an angle of degrees.

15, 10

5, 8

57, 50

37, 30

10. Which sinus will be projected through the open mouth with a PA axial transoral projection?

Ehtmoid

Maxillary

Frontal

Sphenoid

11. Which structures specifically are visualized better on the modified parietoacanthial (Waters) projection as compared with the basic Waters projections?

Zygomatic arches & lacrimals

Orbital rims & floor

Nasal septum

Orbits & palatine

12. A "free floating" zygomatic bone is the frequent result of a ____fracture.

Blowout

Countecroup

Tripod

Le Fort