Question 1

Which of the following is placed perpendicular to the image receptor for the acanthoparietal projection (reverse Waters method)  of the facial bones?

Accepted Answer

A)   Mentomeatal line
B)   Infraorbitomeatal line
C)   Acanthiomeatal line
D)   Glabellomeatal lineE) A) and B)
F) A) and C)

Question 2

The largest sinus is the:

Accepted Answer

A)   frontal.
B)   maxillary.
C)   ethmoidal.
D)   sphenoidal.E) A) and D)
F) B) and C)

Question 3

Which two facial bones form the roof of the mouth?
1) Maxillae
2) Vomer
3) Palatine bones

Accepted Answer

A)   1 and 2
B)   1 and 3
C)   2 and 3
D)   1, 2, and 3E) C) and D)
F) A) and B)

Question 4

The posterior half of the base of the skull is formed by which bone?

Accepted Answer

A)   Temporal
B)   Sphenoid
C)   Occipital
D)   ParietalE) All of the above
F) A) and B)

Question 5

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) B) and C)
F) A) and D)

Question 6

Which line should be placed parallel to the plane of the image receptor for the SMV projection of the cranial base?

Accepted Answer

A)   Acanthiomeatal line
B)   Orbitomeatal line
C)   Infraorbitomeatal line
D)   Mentomeatal lineE) C) and D)
F) None of the above

Question 7

The opening into the apex of the orbit for the transmission of the optic nerve and ophthalmic artery is called the:

Accepted Answer

A)   optic canal.
B)   foramen.
C)   foramina ovale.
D)   foramina rotundum.E) C) and D)
F) None of the above

Question 8

The axiolateral oblique projection is used to demonstrate the mandible. How is the head positioned to demonstrate the ramus of the mandible?

Accepted Answer

A)   True lateral
B)   30 degrees toward the IR
C)   45 degrees toward the IR
D)   30 to 45 degrees toward the IRE) B) and C)
F) A) and D)

Question 9

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

Accepted Answer

A)   clivus.
B)   clinoid processes.
C)   sella turcica.
D)   dorsum sellae.E) C) and D)
F) All of the above

Question 10

The suture identified on the figure below is the:

Accepted Answer

A)   coronal.
B)   squamosal.
C)   sagittal.
D)   lambdoidal.E) All of the above
F) B) and C)

Question 11

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

Accepted Answer

A)   Parietoacanthial (Waters) 
B)   PA axial (Caldwell) 
C)   AP axial (Towne) 
D)   PAE) A) and B)
F) None of the above

Question 12

Which of the following is true regarding the lateral projection of the skull?
1) The midsagittal plane of the head is parallel to the image receptor.
2) The interpupillary line is perpendicular to the image receptor.
3) The mentomeatal line is parallel with the bottom edge of the image receptor.

Accepted Answer

A)   1 and 2
B)   1 and 3
C)   2 and 3
D)   1, 2, and 3E) None of the above
F) All of the above

Question 13

What type of joint is the TMJ?

Accepted Answer

A)   Synovial-hinge
B)   Synovial-gliding
C)   Synovial-ellipsoidal
D)   Synovial-hinge and glidingE) A) and C)
F) A) and B)

Question 14

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

Accepted Answer

A)   PA axial (Caldwell) 
B)   AP axial (Towne) 
C)   PA axial (Haas) 
D)   SMV (Shüller) E) A) and B)
F) A) and C)

Question 15

What projection and anatomy is demonstrated in the image below?

Accepted Answer

A)   AP axial of the TMJs
B)   PA axial of the mandibular rami
C)   PA of the mandibular body
D)   Axiolateral oblique of the mandibular bodyE) All of the above
F) A) and B)

Question 16

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) C) and D)
F) A) and B)

Question 17

The parietoacanthial projection (Waters method)  of the sinuses requires the orbitomeatal line to be placed how many degrees from the plane of the image receptor?

Accepted Answer

A)   20 degrees
B)   27 degrees
C)   30 degrees
D)   37 degreesE) A) and B)
F) A) and C)

Question 18

The suture located between the occipital bone and the parietal bones is the:

Accepted Answer

A)   lambdoidal.
B)   squamosal.
C)   sagittal.
D)   corona.E) A) and D)
F) A) and C)

Question 19

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) B) and D)
F) All of the above

Question 20

The part of the cranial base identified in the figure below is the:

Accepted Answer

A)   auditory canal.
B)   dorsum sellae.
C)   greater wing.
D)   petrous portion.E) B) and C)
F) A) and D)

Exam 20: Skull, Facial Bones, and Paranasal Sinuses

The part of the cranial base identified in the figure below is the:

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The largest sinus is the:

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The suture identified on the figure below is the:

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

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Which of the following is true regarding the lateral projection of the skull? 1) The midsagittal plane of the head is parallel to the image receptor. 2) The interpupillary line is perpendicular to the image receptor. 3) The mentomeatal line is parallel with the bottom edge of the image receptor.

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The opening into the apex of the orbit for the transmission of the optic nerve and ophthalmic artery is called the:

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The suture located between the occipital bone and the parietal bones is the:

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

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The axiolateral oblique projection is used to demonstrate the mandible. How is the head positioned to demonstrate the ramus of the mandible?

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

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Which of the following is placed perpendicular to the image receptor for the acanthoparietal projection (reverse Waters method) of the facial bones?

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What projection and anatomy is demonstrated in the image below?

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The parietoacanthial projection (Waters method) of the sinuses requires the orbitomeatal line to be placed how many degrees from the plane of the image receptor?

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What type of joint is the TMJ?

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Which two facial bones form the roof of the mouth? 1) Maxillae 2) Vomer 3) Palatine bones

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Which line should be placed parallel to the plane of the image receptor for the SMV projection of the cranial base?

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

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The posterior half of the base of the skull is formed by which bone?

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

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