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WorksheetsCranial Bones Anatomy Ch 11 Part 1
Total questions: 88
Worksheet time: 1hrs 28mins
Which of the following bones is part of the floor of the cranium?
Temporal
Occipital
Frontal
Parietal
How many bones make up the facial bone region?
6
8
12
14
Which bony landmark represents the highest level of the facial bone mass?
Nasion
Acanthion
Orbital plates
Supraorbital notch
The widest portion of the cranium is found at the level of the:
parietal tubercles.
right and left perion.
squamous portion of the temporal bone.
external acoustic meatus (EAM).
What is the name of the joint found between the lateral condylar processes of the skull and the atlas of C1?
Zygapophyseal joint
Intervertebral joint
Atlanto-occipital joint
Cervico-occipital joint
Which cranial bone articulates with the other seven cranial bones?
Parietal
Ethmoid
Sphenoid
None of the above
The slight depression above each eyebrow is termed the:
glabella.
supraorbital foramina.
supraorbital groove.
frontal tuberosity.
Which of the following cranial bones does not articulate with the parietal bone?
Frontal
Sphenoid
Occipital
All of the above articulate with the parietal bone.
The left mastoid fontanel becomes the_____in an adult.
left asterion
left pterion
left bregma
squamosal suture
There are a total of _______fontanels in an infant.
four
two
six
eight
The frontal bone articulates with______cranial bones.
four
six
two
Which of the following landmarks corresponds with the level of the petrous ridge?
EAM
Top of ear attachment (TEA)
Squamosal suture
Inion
The pituitary gland (hypophysis cerebri) is associated with and protected by the______bone.
temporal
ethmoid
palatine
sphenoid
Which cranial bone contains the foramen ovale?
Sphenoid
Occipital
Ethmoid
Temporal
Which cranial bone contains the cribriform plate?
Sphenoid
Occipital
Temporal
Ethmoid
Which of the following sutures separates the parietal from the occipital bone?
Squamosal
Sagittal
Coronal
Lambdoidal
Which of the following terms describes the anterior fontanel found in the adult skull?
Bregma
Pterion
Asterion
Lambada
Which of the following terms describes the small irregular bones occasionally found in the sutures?
Asterion
Wormian
Sesamoid
Squamosal
The ethmoid notch is part of which cranial bone?
Temporal
Ethmoid
Sphenoid
Frontal
Which cranial bone is labeled vi in this figure?
Temporal
occipital
Greater wing of Sphenoid
Parietal
Which bony structure is labeled v? through and sutures a through
EAM
Mastoid process
Styloid process
Zygomatic process
The cranial bone labeled i is the:
Sphenoid
Lacrimal
Ethmoid
Palatine
Which cranial suture is labeled g?
Coronal
Squamosal
Lambdoidal
Sagittal
The sutural point or area labeled e is the:
Lambda
Asterion
Bregma
Pterion
The sutural point or area labeled d is the:
Bregma
Lambda
Asterion
Pterion
The suture labeled f is the:
Asterion
Lambdoidal
Coronal
Squamosal
The term that describes the anterior fontanel found in the adult skull is:
Bregma
Lambda
Pterion
Asterion
Which of the following terms describes the small irregular bones occasionally found in the sutures?
Asterion
Wormian
Sesamoid
Squamosal
The ethmoid notch is part of which cranial bone?
Temporal
Ethmoid
Sphenoid
Frontal
Which of the fontanels is the last to close at about 18 months of age?
Sphenoid
Mastoid
Anterior
Posterior
An average-shaped skull with a 47° angle between the petrous pyramids and the midsagittal plane is classified as:
mesocephalic.
brachycephalic.
dolichocephalic.
morphocephalic.
An axiolateral oblique projection (modified Law method) for the temporomandibular joints on a brachycephalic type of skull would require____rotation as compared with an average-shaped skull.
more
less
the same
Rotation depends on the patient’s age.
Which term describes the small flap of cartilage covering the opening to the ear?
Tragus
Pinna
Acanthion
EAM
What is the difference, in degrees, between the infraorbitomeatal and orbitomeatal lines?
10°
15° to 22°
7° to 8°
20° to 25°
Which one of the following technical considerations is most critical for demonstrating air and/or fluid levels within the cranium?
Low kV range
Detail image receptor (IR)
Short exposure time
Erect or horizontal x-ray beam positioning
A radiograph of an anteroposterior (AP) axial projection of the cranium reveals that the dorsum sellae is projected below the foramen magnum, but the posterior arch of C1 is visible within the foramen. Which of the following positioning errors led to this radiographic outcome?
Excessive central ray (CR) angulation
Insufficient CR angulation
Insufficient flexion of the head and neck
Tilt of the skull
Which one of the following positioning errors most often results in a repeat exposure of a cranial position?
Incorrect rotation and tilt
Incorrect central ray placement
Slight flexion
Slight extension
A radiograph of a posteroanterior (PA) axial projection (Caldwell method) of the cranium reveals that the petrous ridges are located at the level of the lower one-third of the orbits. The technologist performed this projection with the CR angled 15° caudad to the orbitomeatal line (OML). How must positioning be altered if a repeat exposure is performed?
Increase the extension of the skull.
Increase the flexion of the skull.
Increase the CR angulation.
None of the above; positioning was correct.
A radiograph of a submentovertex projection of the cranium reveals that the mandibular mentum are projected into the ethmoid sinuses. What must be altered during the repeat exposure to produce a more diagnostic radiograph?
Increase the extension of the skull.
Increase the flexion of the skull.
Decrease the CR angulation.
None of the above; it is an acceptable image.
A radiograph of a lateral projection of the cranium reveals that the orbital roofs (plates) are not superimposed—one is slightly superior to the other. Which of the following positioning errors led to this radiographic outcome?
Rotation
Tilt
Excessive Flexion
Excessive Extension
A radiograph of a lateral cranium reveals that the mentum of the mandible was cut off from the bottom of the radiograph. A 24 × 30-cm (10 × 12-inch) IR was used, and it was placed landscape. What must be altered if a repeat exposure is performed?
Center the CR at the EAM.
Increase SID to reduce magnification.
Place the 24 × 30-cm (10 × 12-inch) IR lengthwise.
None of the above; all of the critical structures were demonstrated.
A patient comes to radiology for a routine study of the cranium. He is unable to flex his head and neck sufficiently to place the OML perpendicular to the IR for the AP axial projection. What should the technologist do to compensate for this problem without creating excessive magnification of the occipital bone?
Use the inferior OML and increase the CR angulation by 7°.
Perform the Haas method.
Perform a submentovertex projection in place of the AP axial projection.
Use the AML and increase the CR angulation by 10°.
A patient enters the emergency department (ED) with a possible basilar skull fracture. Which of the following skull projections would best demonstrate any blood present in the sphenoid sinus?
AP with a 15° cephalic angle
Haas method
Submentovertex
Horizontal beam lateral projection
A patient comes to radiology with a history of a possible erosion of the superior orbital fissures. Which of the following projections would best demonstrate this structure?
PA axial with a 15° caudad angle to OML
Submentovertical
PA axial with a 25° to 30° caudad angle to OML
AP axial with a 37° caudad angle to OML
Which of the following positioning errors most often results in a repeat exposure of a lateral projection of the skull?
Rotation
Tilt
Excessive flexion
Excessive extension
A patient comes to radiology with a possible bone cyst within the squamous portion of the frontal bone. Which of the following projections would best demonstrate this region with a minimal amount of distortion of the frontal bone?
AP axial with a 30° caudad angle to OML
PA axial with a 30° caudad angle to OML
PA axial with a 15° caudad angle to OML
PA with no CR angulation to OML
A PA axial projection with a 25° caudad angle of the cranium reveals that the petrous ridges are at the level of the superior orbital margins. Which of the following modifications are required to correct this error?
Decrease CR angle.
Increase extension of cranium.
Increase flexion of cranium.
No corrections are required; this is an acceptable position.
Which one of the following cranial projections will best demonstrate a possible basilar fracture?
PA axial (Caldwell method)
Lateral recumbent
Horizontal beam lateral
AP axial (Towne method)
Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne) projection with a 37° caudad CR angle?
OML
IOML
AML
LML
Which division of the temporal bone contains the organs of hearing and equilibrium?
Petrous
Mastoid
Squamous
Antrum
Which one of the following structures is part of the middle ear?
Tragus
Cochlea
Tympanic cavity
Eustachian tube
To which aspect of the ear does the eustachian tube attach?
External ear
Middle ear
Inner ear
Cochlea
The aditus is defined as a(n):
large chamber containing the mastoid air cells.
thin plate of bone separating the mastoid air cells from the brain.
passageway for the auditory nerve.
opening between the epitympanic recess and the mastoid air cells.
The mastoid air cells communicate with the:
inner ear.
middle ear.
external ear.
base of the brain.
Which of the following structures of the inner ear is responsible for hearing?
Vestibule
Semicircular canals
Cochlea
Round window
Where is the CR centered for a lateral projection of the cranium?
EAM
Three-fourths inch (2 cm) anterior and three-fourths inch (2 cm) superior
Two inches (5 cm) superior to EAM
Midway between EAM and nasion
Which cranial bone possesses the sella turcica?
Temporal
Sphenoid
Ethmoid
Occipital
Which cranial bone possesses the superior nasal conchae?
Ethmoid
Sphenoid
Frontal
Temporal
Which cranial bone possesses the zygomatic process?
Frontal
Sphenoid
Temporal
Ethmoid
Which of the following modalities best demonstrates early signs of Paget’s disease of the skull?
CT
Nuclear medicine
MRI
Sonography
A patient comes to radiology with a clinical history of an acoustic neuroma. Which of the following imaging modalities will provide the best assessment for this tumor?
Radiography
Ultrasound
Nuclear medicine
MRI
A patient comes to radiology with acute mastoiditis. Which one of the following imaging modalities will best demonstrate possible bony destruction within the mastoid region?
CT
Nuclear medicine
Ultrasound
PET
A patient comes in with a clinical history of a possible pituitary adenoma. Because this is a rural hospital, CT and MRI are not available. Which radiographic projection or position would best demonstrate signs of bony erosion of the sella turcica because of the tumor?
AP axial (Towne method)
PA axial (Caldwell method)
Lateral position
Both A and C
What is the largest immovable bone of the face?
Vomer
Mandible
Maxilla
Zygomatic
Which facial bone forms the majority of the hard palate?
Mandible
Palatine
Maxilla
Zygomatic
Which three cranial bones articulate directly with the zygomatic bone?
Frontal, ethmoid, temporal
Frontal, sphenoid, temporal
Sphenoid, frontal, occipital
Ethmoid, parietal, frontal
Which of the following terms describes the junction of the two nasal bones?
Nasion
Acanthion
Glabella
Supraorbital groove
Which of the following structures are described as scroll-like projections found in the nasal cavity?
Perpendicular plate
Pterygoid processes
Septal cartilage
Conchae
Which two bones form the bony nasal septum?
Superior and inferior nasal conchae
Ethmoid and vomer
Vomer and maxilla
Sphenoid and ethmoid
The upper and lower teeth are embedded in the:
symphysis menti.
condyloid processes.
palatine processes.
alveolar processes.
The point of union between both halves of the mandible is termed:
gonion.
ramus.
symphysis menti.
mental foramina.
What primary type of joint movement occurs with the temporomandibular joint?
Plane
Gomphosis
Spheroidal
Bicondylar
What is the classification of the joint found between the teeth and maxilla?
Synovial
Fibrous
Cartilaginous
Synarthrodial
The posterior aspect of the orbit is termed the:
apex.
base.
sphenoid strut.
crown.
How many facial bones help make up the bony orbit?
Three
Four
Five
Seven
The bone labeled 2 is the:
lacrimal.
maxilla.
ethmoid.
palatine.
79. Part 10 is part of which bone?
Maxila
Sphenoid
Zygomatic
Ethmoid
Refer to the diagram. Part 7 is part of which bone?
Ethmoid
Lacrimal
Zygomatic
Sphenoid
Refer to the diagram. Part 3 is part of which bone?
Ethmoid
Lacrimal
Zygomatic
Sphenoid
Part 6 is which of the following?
inferior orbital fissure
Optic Foramina
Superior Orbital Fissure
Lacrimal duct
Part 9 is part of which bone?
Zygomatic
Maxilla
Sphenoid
Ethmoid
The part labeled 8 is part of which bone?
Palatine
Sphenoid
Ethmoid
Zygomatic
What is the only paranasal sinus not contained within a cranial bone
Maxillary
Sphenoid
Ethmoid
Frontal
The term antrum of Highmore is an older term for the:
Frontal Sinuses
Ethmoid Sinuses
Maxillary Sinuses
Nasal Cavity
Which sinus often produces an air/fluid level indicating a basilar skull fracture?
Ethmoid
Maxillary
Sphenoid
Frontal
Where are the ethmoid sinuses located within the ethmoid bone?
Perpendicular Plate
Pterygoid processes
Cribriform plate
Lateral masses
The passageway drains the maxillary sinus into the middle nasal conchae.
Ethmoid Bulla
Infundibulum
Uncinate Process
inferior nasal concha
The sinuses develop last and are not fully developed until the teenage years.
Ethmoid
Sphenoid
Nasal
Maxillary
