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Facial Bones Test

Terms in this set (105)

True or false: The lateral projection of the facial boness typically a unilateral projection
True
A radiograph of a lateral projection of the facial bones reveals that the Mandibular rami are NOT superimposed. What positioning error is present?
Rotation
What is the largest immovable bone of the face?
Maxilla
A common base PA axial projection for facial bones needs 15 degree caudad angle of the CR, which projects dense petrous ridges in lower 1/3 of the orbits.
True
The maxilla contains a coronoid process
False




(Mandible)
Which positioning line is placed perpendicular to the plane of the IR for the parietoacanthial projection?
Mentomeatal (MML)
Which of the following facial bones are paired?

1. Vomer
2. Maxilla
3. Zygoma
1 & 2 only
Which of the following projection will best demonstrate the bony nasal septum?
Parietoacanthial
Which bones are sometimes called the "cheek bones"?
Zygoma
Which positioning line is placed perpendicular to the plane of the IR with a true lateral nasal bone projection?
Interpupillary
The CR must b placed parallel to the _________ positioning line for the superioinferior (Tangential) projection of the nasal bones.
Glabelloalveolar (GAL)
The point of union between both halves of the mandible is termed:
Symphysis mentí
Lateral projections for the nasal bones generally are taken bilaterally for comparison
True
What CR angle must be used to project the petrous ridges below the orbital with the PA Axial projection?
Perpendicular
The maxilla contains the alveolar process on its inferior border
True
A radiograph of a parietoacanthial (Waters) projection reveals that the petrous ridges are superimposed over lower 30% of the maxillary sinuses. What specific positioning error (if any) led to this finding?
Insufficient extension
A radiograph of a PA Caldwell projection reveals that the petrous ridges are projected into lower 1/3 of maxillary sinuses. Which of the following modifications should be made during the exposure to produce a more diagnostic image?
Decrease extension of the head and neck
The purpose of the _______ is to divide the nasal cavity into compartments and circulate air coming into the nasal cavities.
Nasal conchae ; turbinates
How many degrees and in what direction should the foot be rotated for the AP OBL projection to demonstrate the second toe?
30-45 medially
The modified parietoacanthial (Modified Waters) projection requires more extension of the head and neck as compared to the parietoacanthial (Waters) projection.
False
Which one of the following projections best demonstrates the sella turcica in profile?
Lateral
What is the inferior end of the sternum called?
Xiphoid process
Which of the following technical factors do NOT apply to lateral nasal bones projections?
All of the above
A radiograph of 15 degree PA projection of the facial bones reveals that the petrous ridges are projected at the level of mid ritual rims. What specific positioning or CR angling error led to this?
Insufficient caudal angle
What is the name of the sharp ridge on the anterior border of the tibia?
Tibial tuberosity
The 15 degree PA Axial (Caldwell)projection produces an unobstructed view of the maxilla
False
Where does the CR exit for a Parietoacanthial (Waters) projection of the facial bones?
Acanthion
Where does the CR exit for a modified parietoacanthial (Modified Waters) projection for the facial bones?
Acanthion
What can the technologist do if a patient cannot extend the head and neck adequately for the routine SMV projection of the skull?
Angle CR to place it perpendicular to IOML
Which cranial bone is best demonstrated with an AP Axial (Towne method) projection of the skull?
Occipital
The tear ducts are associated with which of the following bones?
Lacrimal
RAO position is used to project the sternum to the left of the thoracic vertebrae in order to take advantage of:
Heart shadow
What is the average kVp for the facial bones?
65-80 kVp
Where are the lacrimal bones located?
On the medial wall of each orbit
What is the angle between the OML and the plane for the parietoacanthial (Waters) projection?
37 degrees
Which 2 bones form the bony nasal septum?
ethmoid and vomer
The CR is centered to exit at level of the ________ for a well positioned 15 degrees PA Axial projection of the facial bones.
Nasion
A fracture involving the facial bones where a blow to one side causes a fracture to the opposite side is termed a:
contrecoup
The mandible articulates with the temporal bone, forming a hinge-type joint
true
In an oblique cervical spine, what structure is BEST visualized?
Intervertebral foramen
MRI is an excellent imaging modality for the detection of small metal foreign bodies in the eye.
False
The upper and lower teeth are embedded in the:
Alveolar processes
Which 3 bones articulate directly with the zygomatic bone?
Frontal, maxilla, temporal
The mandible contains a paranasal sinus
False
The lateral projection for the nasal bones is generally a unilateral projection. (Both R & L lateral projections are usually not required.)
False
The condition in which pulmonary alveoli lose their elasticity and become permanently inflated, causing pt to consciously exhale is:
Emphysema
Which of the following is a reliable method for checking rotation on a PA chest radiograph?
Symmetry of sternoclaviclar joints
How much difference is there between the OML and IOML positioning lines?
7-8 degrees
The vomer contains vertical and horizontal plates; completes the posterior fourth of the bony palate
False
Which structures specifically are visualized better on the modified Parietoacanthial (Waters) projection as compared with the basic Waters projection?
Inferior rim of the orbit; orbital rims and floors
A patient enters the ED with a possible nasal bone fracture. The physician is concerned about a possible bony nasal septum deviation, s well as fractured nasal bones. Which of the following routines would best diagnose these injuries?
Parietoacanthial, lateral nasal bone, and superoinferior (axial) projections
Which one of the following projections best demonstrates the clivus in profile?
Lateral
Floor of orbits
Modified Waters
Occipital bone
Haas Method
Petrous ridges in lower 1/3 of orbit
PA Axial Caldwell
Profile image of nasal septum
Lateral nasal bones
Bilateral zygomatic arches
Submentovertex (SMV) projection
Inferior orbital rims, maxillae, nasal septum, nasal spine, zygomatic bone and arches
Parietoacanthial projection
facial bone studies should always be performed recumbent when possible.
False
the recommended kV range for superoinferior tangential projection of the nasal bone is:
60-70
Where is the CR centered for a lateral projection of the facial bones?
Zygoma, midway between the EAM and outer canthus
List the 4 processes of the maxilla
Frontal, zygomatic, alveolar, palatine
Which one of the facial bone openings is formed by a cleft between the greater and lesser wings of the sphenoid bone?
Superior orbital fissure
How can OID be reduced for a PA projection of the wrist?
Flex the metacarpophalangeal joints
The vomer articulates with the perpendicular plate of the ethmoid
True
Which projection best demonstrates the floor of the orbits?
Modified parietoacanthial (modified waters)
Which of the following structures are described as scroll-like projections found in the nasal cavity?
Conchae
When using a 30 degree caudad for the AP axial (Towne method) projection of the skull, which positioning line should be perpendicular to the image receptor?
OML
The vertical portion of each palatine bone projects upward between which two bones?
Maxilla and sphenoid
Which of the following anatomical structures must be included for a lateral nasal bone projection?
Anterior nasal spine
Which two cranial bones articulate with the maxilla?
Ethmoid and frontal
Which of the following terms describes the junction of the two nasal bones?
Nasion
Where is the sphenoid strut?
In the orbits
What is the sphenoid strut?
small root of bone that separates the superior orbital fissure from optic canal ; portion of lateral wall of optic canal
The petrous pyramids hold what?
internal acoustic meatus = nerves of hearing and balance
The temporal bone houses:
the delicate organs of hearing and balance
What processes does the temporal bone have?
Styloid, zygomatic, mastoid
What is the most superior part of the ethmoid bone?
Crista galli
What does crista galli mean?
rooster's comb
The crista galli fits into the...
Cribriform plate
What 2 cranial bones does the maxilla articulate with?
frontal, ethmoid
What 7 facial bones does the maxilla articulate with?
zygoma, lacrimal, nasal, palatine, inferior nasal conchae, vomer, & adjacent maxilla
What 3 cranial bones does the zygoma articulate with?
frontal, sphenoid, temporal
What facial bone does the zygoma articulate with?
Maxilla
What 2 cranial bones does the lacrimal bone articulate with?
frontal, ethmoid
What 2 facial bones does the lacrimal bone articulate with?
maxilla, inferior nasal conchae
What 2 cranial bones does the nasal bone articulate with?
frontal, ethmoid
What 2 facial bones does the nasal bone articulate with?
Maxilla, adjacent nasal bone
What cranial bone does the inferior nasal conchae articulate with?
ethmoid
What 3 facial bones does the inferior nasal conchae articulate with?
maxilla, lacrimal, palatine
What 2 cranial bones does the palatine bone articulate with?
sphenoid, ethmoid
What 4 facial bones does the palatine bone articulate with?
maxilla, inferior nasal conchae, vomer, and adjacent palatine
What 2 cranial bones does the vomer connect with?
sphenoid, ethmoid
What 4 facial bones does the vomer articulate with?
R & L palatine, R & L maxilla
Sinuses finish developing at...
late teenage years
The maxillary sinuses develop:
first, cavity present at birth
The frontal and sphenoid sinuses develop at:
age 6-7
The ethmoid sinus develops...
last, in late teenage years
Another name for the maxillary sinus is:
Antrum of Highmore aka "antrum"
Axiolateral Oblique Mandible to view the ramus:
Cr 25 degrees cephalad, head in true lateral position, no rotation, extend neck
Axiolateral Oblique Mandible to view the mentum:
CR 25 degrees cephalad, head turned 45 degrees, extend neck
Axiolateral Oblique Mandible to view the body:
CR 25 degrees cephalad, head in lateral position & then turn 30 degrees
How many bones make up the orbits?
7 total (3 cranial, 4 facial)
List the 3 cranial bones that make up the orbits
frontal, sphenoid, ethmoid
List the 4 facial bones that make up the orbits
maxilla, zygoma, lacrimal, platine
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