Bontrager; Radiographic Positioning
Chapter 11 Exam
How many cranial bones make up the skull? - Correct Answers -8
How many facial bones make up the skull? - Correct Answers -14
A. Parietal bone
B. Frontal bone
C. Nasal bone
D. Temporal bone
E. Sphenoid bone
F. Ethmoid bone
G. Lacrimal bone
H. Zygomatic bone
I. Maxilla
J. Mandible
K. Vomer
L. Alveolar margin
M. Inferior nasal concha
N. Middle nasal concha of ethmoid bone
O. Optic canal - Correct Answers -Name the parts on the frontal view of the facial
bones:
a. Ethmoid bone
b. Sphenoid bone
c. Temporal bone
d. Occipital bone
e. Foramen magnum
f. Parietal bone
g. Sella turcica
h. Frontal bone - Correct Answers -Name the parts labeled on the superior view of the
facial bones:
Which four cranial bones form the calvarium (skull cap) - Correct Answers -1. Frontal
2. Right parietal
3. Left parietal
4. Occipital
,Which four cranial bones form the floor of the cranium? - Correct Answers -1. Right
temporal
2. Left temporal
3. Sphenoid
4. Ethmoid
Which of the following bones is NOT part of the floor of the cranium?
A. Temporal
B. Ethmoid
C. Occipital
D. Sphenoid - Correct Answers -C. Occipital
Which aspect of the frontal bone is thin-walled and forms the forehead? - Correct
Answers -Squamous
Which bony landmark represents the highest level of the facial bone mass? - Correct
Answers -Orbital plates
Which four cranial bones articulate with the frontal bone? - Correct Answers -Right
parietal
Left parietal
Sphenoid
Ethmoid
1. Glabella
2. Supercilliary ridge (arch)
3. Supraorbital margin (SOM)
4. Frontal tuberosity (eminence)
5. Supraorbital groove
6. Supraorbital notch (foramen) - Correct Answers -Name the parts labeled on the
frontal view of the frontal bone:
Which structures are found at the widest aspect of the skull? - Correct Answers -Parietal
tubercles or eminences
What is the name of the prominent landmark (or "bump") found on the external surface
of the occipital bone? - Correct Answers -External occipital protuberance or INION
How many cranial bones articulate with the parietal bone? - Correct Answers -5 (frontal,
temporal, occipital sphenoid and opposite parietal)
How many cranial bones articulate with the occipital bone? - Correct Answers -6 (right
and left parietal, right and left temporal, sphenoid, C1 atlas)
How many cranial bones articulate with the temporal bone? - Correct Answers -3
(parietal, occipital and sphenoid)
, A radiograph of a parietoacanthial (Waters) projection for sinuses reveals that the
petrous pyramids are projected over the maxillary sinuses. What positioning error is
present on this radiograph? - Correct Answers -Excessive flexion
A radiograph of a SMV projection reveals that the mandible is superimposed over the
ethmoid and sphenoid sinuses. Which of the following modifications will eliminate this
problem? - Correct Answers -Increase the extension of the head and neck.
A radiograph of a parietoacanthial transoral (open-mouth Waters) projection reveals that
the mouth is open but the sphenoid sinus is superimposed over the maxilla and upper
teeth. What positioning error led to this radiographic outcome? - Correct Answers -
Insufficient extension of the head and neck
How many cranial bones articulate with the sphenoid bone? - Correct Answers -All 7
( right and left parietal, right and left temporal, ethmoid, frontal, occipital)
How many cranial bones articulate with the ethmoid bone? - Correct Answers -2 (frontal
and sphenoid)
Which of the following cranial bones does NOT articulate with the parietal bone?
A. Frontal
B. Sphenoid
C. Occipital
D. All of the above articulate with the parietal bone. - Correct Answers -D. All of the
above articulate with the parietal bone.
What is the thickest and densest structure in the cranium? - Correct Answers -Petrous
portion or petrous pyramids
The slight depression above each eyebrow is termed the: - Correct Answers -
Supraorbital groove.
T/F The hypophysis cerebri is another term for the pituitary gland - Correct Answers -
True
T/F The sphenoid bone articulates with all other cranial bones - Correct Answers -True
The shallow depression just posterior to the base of the dorsum sellae and anterior to
the foramen magnum is the ___________. - Correct Answers -Clivus
What is the name of the paired collections of bone found inferior to the cribriform plate
that contain numerous air cells and help form the lateral walls of the nasal cavity? -
Correct Answers -Lateral masses or labyrinth
Chapter 11 Exam
How many cranial bones make up the skull? - Correct Answers -8
How many facial bones make up the skull? - Correct Answers -14
A. Parietal bone
B. Frontal bone
C. Nasal bone
D. Temporal bone
E. Sphenoid bone
F. Ethmoid bone
G. Lacrimal bone
H. Zygomatic bone
I. Maxilla
J. Mandible
K. Vomer
L. Alveolar margin
M. Inferior nasal concha
N. Middle nasal concha of ethmoid bone
O. Optic canal - Correct Answers -Name the parts on the frontal view of the facial
bones:
a. Ethmoid bone
b. Sphenoid bone
c. Temporal bone
d. Occipital bone
e. Foramen magnum
f. Parietal bone
g. Sella turcica
h. Frontal bone - Correct Answers -Name the parts labeled on the superior view of the
facial bones:
Which four cranial bones form the calvarium (skull cap) - Correct Answers -1. Frontal
2. Right parietal
3. Left parietal
4. Occipital
,Which four cranial bones form the floor of the cranium? - Correct Answers -1. Right
temporal
2. Left temporal
3. Sphenoid
4. Ethmoid
Which of the following bones is NOT part of the floor of the cranium?
A. Temporal
B. Ethmoid
C. Occipital
D. Sphenoid - Correct Answers -C. Occipital
Which aspect of the frontal bone is thin-walled and forms the forehead? - Correct
Answers -Squamous
Which bony landmark represents the highest level of the facial bone mass? - Correct
Answers -Orbital plates
Which four cranial bones articulate with the frontal bone? - Correct Answers -Right
parietal
Left parietal
Sphenoid
Ethmoid
1. Glabella
2. Supercilliary ridge (arch)
3. Supraorbital margin (SOM)
4. Frontal tuberosity (eminence)
5. Supraorbital groove
6. Supraorbital notch (foramen) - Correct Answers -Name the parts labeled on the
frontal view of the frontal bone:
Which structures are found at the widest aspect of the skull? - Correct Answers -Parietal
tubercles or eminences
What is the name of the prominent landmark (or "bump") found on the external surface
of the occipital bone? - Correct Answers -External occipital protuberance or INION
How many cranial bones articulate with the parietal bone? - Correct Answers -5 (frontal,
temporal, occipital sphenoid and opposite parietal)
How many cranial bones articulate with the occipital bone? - Correct Answers -6 (right
and left parietal, right and left temporal, sphenoid, C1 atlas)
How many cranial bones articulate with the temporal bone? - Correct Answers -3
(parietal, occipital and sphenoid)
, A radiograph of a parietoacanthial (Waters) projection for sinuses reveals that the
petrous pyramids are projected over the maxillary sinuses. What positioning error is
present on this radiograph? - Correct Answers -Excessive flexion
A radiograph of a SMV projection reveals that the mandible is superimposed over the
ethmoid and sphenoid sinuses. Which of the following modifications will eliminate this
problem? - Correct Answers -Increase the extension of the head and neck.
A radiograph of a parietoacanthial transoral (open-mouth Waters) projection reveals that
the mouth is open but the sphenoid sinus is superimposed over the maxilla and upper
teeth. What positioning error led to this radiographic outcome? - Correct Answers -
Insufficient extension of the head and neck
How many cranial bones articulate with the sphenoid bone? - Correct Answers -All 7
( right and left parietal, right and left temporal, ethmoid, frontal, occipital)
How many cranial bones articulate with the ethmoid bone? - Correct Answers -2 (frontal
and sphenoid)
Which of the following cranial bones does NOT articulate with the parietal bone?
A. Frontal
B. Sphenoid
C. Occipital
D. All of the above articulate with the parietal bone. - Correct Answers -D. All of the
above articulate with the parietal bone.
What is the thickest and densest structure in the cranium? - Correct Answers -Petrous
portion or petrous pyramids
The slight depression above each eyebrow is termed the: - Correct Answers -
Supraorbital groove.
T/F The hypophysis cerebri is another term for the pituitary gland - Correct Answers -
True
T/F The sphenoid bone articulates with all other cranial bones - Correct Answers -True
The shallow depression just posterior to the base of the dorsum sellae and anterior to
the foramen magnum is the ___________. - Correct Answers -Clivus
What is the name of the paired collections of bone found inferior to the cribriform plate
that contain numerous air cells and help form the lateral walls of the nasal cavity? -
Correct Answers -Lateral masses or labyrinth
