Question 1

The letter A in the image below of the paranasal sinuses labels the _____ sinuses.

Accepted Answer

A)   ethmoid
B)   sphenoid
C)   maxillary
D)   frontalE) All of the above
F) None of the above

Question 2

Which reference line is positioned horizontal to ensure proper extension of the head during a lateral projection of the sinuses?

Accepted Answer

A)   AML
B)   OML
C)   IOML
D)   MMLE) B) and D)
F) A) and D)

Question 3

The midsagittal plane of the head is rotated how many degrees for the axiolateral oblique projection of the TMJ?

Accepted Answer

A)   0 degrees toward the IR
B)   15 degrees toward the IR
C)   0 degrees away from the IR
D)   15 degrees away from the IRE) All of the above
F) A) and B)

Question 4

The cranial bones are rigidly jointed together by articulations called:

Accepted Answer

A)   joints.
B)   bursae.
C)   sutures.
D)   cartilage.E) B) and C)
F) None of the above

Question 5

The letter D in the image below of the paranasal sinuses labels the _____ sinuses.

Accepted Answer

A)   frontal
B)   ethmoid
C)   sphenoid
D)   maxillaryE) A) and D)
F) A) and C)

Question 6

What structure is labeled as letter B in the image below,used to evaluate the cranium?

Accepted Answer

A)   Acanthion
B)   Crista galli
C)   Cribriform plate
D)   Petrous ridgeE) A) and B)
F) All of the above

Question 7

Where are the petrous ridges seen on an image of a parietoacanthial (Waters method) projection of the paranasal sinuses?

Accepted Answer

A)   In the middle of the maxillary sinuses
B)   Superior to the maxillary sinuses
C)   Inferior to the floor of the maxillary sinuses
D)   In the lower two thirds of the maxillary sinusesE) B) and C)
F) A) and B)

Question 8

How was the central ray directed to obtain the image below,used to evaluate the cranium?

Accepted Answer

A)   Perpendicular to IOML
B)   15 degrees caudad
C)   25 degrees cephalad
D)   37 degrees caudadE) A) and C)
F) None of the above

Question 9

Where is the image receptor centered for the parietoacanthial (Waters method) projection of the sinuses?

Accepted Answer

A)   Nasion
B)   Inion
C)   Glabella
D)   AcanthionE) All of the above
F) C) and D)

Question 10

What projection (method) used to evaluate the cranium is demonstrated in the image below?

Accepted Answer

A)   Parietoacanthial (Waters) 
B)   PA axial (Caldwell) 
C)   AP axial (Towne) 
D)   PAE) A) and B)
F) C) and D)

Question 11

Radiographic demonstration of the cranial base is performed by which method?

Accepted Answer

A)   Haas
B)   Rhese
C)   Towne
D)   SchüllerE) A) and C)
F) B) and C)

Question 12

Often a patient cannot be turned into the prone position for a PA axial projection of the skull (Caldwell method) .What central-ray angle would be used if the AP axial projection is used instead?

Accepted Answer

A)   10 degrees caudad
B)   15 degrees cephalad
C)   10 to 15 degrees caudad
D)   10 to 15 degrees cephaladE) All of the above
F) A) and B)

Question 13

Which of the following is located in the internal ear?

Accepted Answer

A)   Concha
B)   Auditory tube
C)   Tympanic membrane
D)   Semicircular canalsE) All of the above
F) A) and B)

Question 14

The bone identified on the skull below is the:

Accepted Answer

A)   temporal.
B)   parietal.
C)   zygoma.
D)   sphenoid.E) A) and C)
F) None of the above

Question 15

All are clearly demonstrated on an SMV projection of the cranial base,except:

Accepted Answer

A)   carotid canals.
B)   sphenoid sinuses.
C)   mastoid process.
D)   frontal sinuses.E) All of the above
F) None of the above

Question 16

For the tangential projection of the zygomatic arch,the central ray is directed perpendicular to the _____ line.

Accepted Answer

A)   infraorbitomeatal
B)   mentomeatal
C)   orbitomeatal
D)   acanthiomeatalE) A) and C)
F) A) and B)

Question 17

What is the central-ray angulation for the SMV projection?

Accepted Answer

A)   0 degrees
B)   5 degrees caudad
C)   5 degrees cephalad
D)   5 to 7 degrees cephaladE) C) and D)
F) A) and D)

Question 18

The part of the sphenoid bone identified in the figure below is the:

Accepted Answer

A)   clivus.
B)   foramen magnum.
C)   sella turcica.
D)   dorsum sellae.E) B) and D)
F) A) and B)

Question 19

Which two are clearly demonstrated within the foramen magnum during an AP axial (Towne) projection of the skull? (Select all that apply.)

Accepted Answer

A)   Dorsum sellae
B)   Posterior clinoids
C)   Sella turcica
D)   Anterior clinoidsE) All of the above
F) B) and D)

Question 20

The bones of the cranium are joined together by fibrous joints called:

Accepted Answer

A)   diploë.
B)   sulci.
C)   sutures.
D)   cartilage.E) B) and C)
F) A) and D)

Exam 11: Cranium

The cranial bones are rigidly jointed together by articulations called:

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What is the central-ray angulation for the SMV projection?

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For the tangential projection of the zygomatic arch,the central ray is directed perpendicular to the _____ line.

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The bones of the cranium are joined together by fibrous joints called:

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The letter A in the image below of the paranasal sinuses labels the _____ sinuses.

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How was the central ray directed to obtain the image below,used to evaluate the cranium?

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The part of the sphenoid bone identified in the figure below is the:

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Which two are clearly demonstrated within the foramen magnum during an AP axial (Towne) projection of the skull? (Select all that apply.)

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Where is the image receptor centered for the parietoacanthial (Waters method) projection of the sinuses?

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Which of the following is located in the internal ear?

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What projection (method) used to evaluate the cranium is demonstrated in the image below?

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What structure is labeled as letter B in the image below,used to evaluate the cranium?

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All are clearly demonstrated on an SMV projection of the cranial base,except:

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The letter D in the image below of the paranasal sinuses labels the _____ sinuses.

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The midsagittal plane of the head is rotated how many degrees for the axiolateral oblique projection of the TMJ?

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The bone identified on the skull below is the:

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Often a patient cannot be turned into the prone position for a PA axial projection of the skull (Caldwell method) .What central-ray angle would be used if the AP axial projection is used instead?

Correct AnswerverifiedShow Answer

Radiographic demonstration of the cranial base is performed by which method?

Correct AnswerverifiedShow Answer

Which reference line is positioned horizontal to ensure proper extension of the head during a lateral projection of the sinuses?

Correct AnswerverifiedShow Answer

Where are the petrous ridges seen on an image of a parietoacanthial (Waters method) projection of the paranasal sinuses?

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