Middle Nasal Conchae
Which one of the following bones is not a facial bone?-middle nasal conchae, vomer, lacrimal bone, or mandible
horizontal portion of the palatine bone
which facial bones form the posterior aspect of the hard palate?
which of the following bones does not articulate with the zygomatic bone?-temporal, maxilla, frontal, sphenoid
conchae or turbinates
the purpose of the _____, or ______, is to divide the nasal cavity into compartments and circulate air coming into the nasal cavities.
septal cartilages and vomer
a deviated nasal septum is most likely to occur at the junction between____and____
from anterior to posterior, the cone shaped orbits project upward at an angle of ____degrees and toward the midsagittal plane at an angle of ____degrees
inferior orbital fissure
which facial bone opening has the maxillary branch of the fifth cranial nerve passing through it?
superior orbital fissure
which facial bone opening is formed by a cleft between the greater and lesser wings of the sphenoid bone?
which sinus will be projected through the open moth with a PA axial transoral projection?
what is the name of the passageway between the maxillary sinuses and the middle nasal meatus?
the common basic PA axial projection for facial bones requires a 15 degree caudad angle of the central ray, which projects the dense petrous ridges into the lower one-third of the orbits
an increase in mAs of 25% to 30% is often required for the geriatric patient with advanced osteoporosis
MRI is an excellent imaging modality for the detection of small metal foreign bodies in the eye
blow out fracture
what is the name of the fracture that results from a direct blow to the orbit leading to a disruption of the inferior orbital margin?
what is the proper method name for the parietoacanthial projection of the facial bones
what CR angle must be used to project the petrous ridges just below the orbital floor with the PA axial projection
orbital rims and floors
which structures specifically are visualized better on the modified parietoacanthial projection as compared with the basic waters projection
reduces OID, reduces exposure to the thyroid gland
give two reasons why projections of the facial bones are performed PA rather than AP when possible
mentomeatal line, 37
the waters projection for the facial bones will have the _____ perpendicular to the image receptor, which places the OML at a ___ angle
the modified waters projection requires that the _____line is perpendicular to the IR, which places the OML at a ____degree angle to the tabletop and IR
the tangential projection for a unilateral zygomatic arch requires that the skull be rotated and tilted 15 degrees away from the affected side
both oblique inferosuperior (tangential) projections for the zygomatic arch are generally taken for comparison
maxillary sinuses, inferior orbital rims
for a pa waters projection, the petrous ridges should be projected directly below the ______and projected into the lower half of the maxillary sinuses or below the _____for a modified waters projection
glabelloavelorline or GAL
for the superiorinferior projection of the nasal bones, the IR is placed perpendicular to the ____
which specific facial bone structures are best demonstrated with the SMV projection if the correct exposure factors are used
1 in superior to glabella to pass through midarches
where is the CR centered for an AP axial projection for the zygomatic arches?
rhese method, 3 point landing
list the proper method name and the common descriptive name for the parieto-orbital oblique projection for the optic foramen
cheek, nose, chin, 53, acanthiomeatal, lower outer
the three aspects of the face that should be in contact with the head unit or tabletop when beginning positiong for the parieto-orbital oblique projections are the___,_____,and ____. The final angle between the midsagittal plane and th IR should be___ degrees, with the _____line perpendicular to the IR. THis places the optic foramen in the _____quadrant of the orbit