Which skull type is narrow from side to side?

Select one:

a. mesocephalic

b. dolichocephalic 

c. brachycephalic

Which projection of the skull can be correctly performed with the central ray angled 37 degrees?

Select one:

a. SMV, Schuller method

b. AP axial, Towne method 

c. PA axial, Haas method

d. PA axial, Caldwell method

The six areas of incomplete ossification in a newborn infant's skull are called the:

Select one:

a. sulci

b. sutures

c. diploë

d. fontanels 

Which two positioning lines or planes should be perpendicular to the IR for the PA projection of the skull?

Select one:

a. Infraorbitomeatal line and midsagittal plane

b. Orbitomeatal line and interpupillary line

c. Infraorbitomeatal line and interpupillary line

d. Orbitomeatal line and midsagittal plane 

With reference to the patient, where should the IR be centered for the lateral projection of the skull?

Select one:

a. 2" below EAM

b. Nasion

c. EAM

d. 2" above EAM 

With reference to the IR, how should the interpupillary line and the midsagittal plane be positioned for the lateral projection of the skull?

Select one:

a. Interpupillary line: perpendicular; midsagittal plane:perpendicular

b. Interpupillary line: parallel; midsagittal plane: parallel

c. Interpupillary line: perpendicular; midsagittal plane: parallel 

d. Interpupillary line: parallel; midsagittal plane: perpenicular

On which cranial bone are the superciliary arches located?

Select one:

a. Ethmoid

b. Frontal 

c. Occipital

d. Parietal

Which of the following bones contain air sinuses? 

(1) ethmoid 

(2) frontal 

(3) sphenoid

Select one:

a. 1 and 2 

b. 1 and 3

c. 2 and 3

d. 1, 2, and 3

In a typically shaped head, the petrous pyramids project anteriorly and medially at what angle?

Select one:

a. 37 degrees

b. 40 degrees

c. 47 degrees 

d. 54 degrees

What is the correct CR angulation for a PA Axial Caldwell of the skull?

Select one:

a. 30 degrees

b. 37 degrees

c. 15 degrees 

d. 20 degrees

Which projection of the skull projects the petrous bones in the lower third of the orbits?

Select one:

a. PA axial, Caldwell method 

b. PA with perpendicular central ray

c. AP axial, Towne method

d. PA axial, Haas method

The petromastoid portion is a part of which bone?

Select one:

a. temporal 

b. sphenoid

c. occipital

d. ethmoid

Which bone in the skull contains the auditory organs and the organs of hearing?

Select one:

a. temporal 

b. sphenoid

c. occipital

d. ethmoid

Where should the CR enter for an AP axial, Towne method projection?

Select one:

a. 2 inches above the glabella

b. 2 inches above the nasion

c. 1 inch above the nasion

d. At the level of the glabella

Which positioning line should be parallel with the IR for the SMV projection of the skull? Select one:

a. Glabellomeatal line

b. Orbitomeatal line

c. Acanthiomeatal line

d. Infraorbitomeatal line

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

Select one:

a. clivus

b. foramen magnum

c. sella turcica

d. dorsum sellae

The topographic line shown in the figure below is the: 
[image]

Select one:

a. glabellomeatal line

b. orbitomeatal line

c. acanthiomeatal line

d. infraorbitomeatal line

The thickest and densest portion of bone in the cranium is the:

Select one:

a. mastoid portion of the temporal bone

b. petrous portion of the temporal bone

c. basilar part of the occipital bone 

d. glabella of the frontal bone

Which of the following image characteristics indicates a PA projection of the skull?

Select one:

a. Petrous ridges lie superior to the supraorbital margin.

b. Petrous ridges are in the lower third of the orbit.

c. Petrous ridges are at the infraorbital margin.

d. Petrous ridges fill the orbits.

Which of the following is clearly demonstrated within the foramen magnum during an AP axial (Towne) projection of the skull? 

(1) dorsum sellae 

(2) sella turcica 

(3) posterior clinoid processes

Select one:

a. 1 and 2

b. 1 and 3 

c. 2 and 3

d. 1, 2, and 3

For the AP axial projection, Towne method, of the skull, how many degrees and in which direction should the CR be directed when the OML is perpendicular to the IR?

Select one:

a. 37 degrees caudad

b. 30 degrees caudad 

c. 30 degrees cephalad

d. 37 degrees cephalad

What external surfaces will the patient have touching the IR for a PA or PA axial projection of the skull?

Select one:

a. Nose & Chin

b. Forehead

c. Forehead & Nose 

d. Forehead, cheek, & nose

Which evaluation criteria pertains to the lateral projection of the skull?

Select one:

a. The orbital roofs should be superimposed. 

b. The distance from the lateral border of the skull to the lateral border of the orbit should be equidistant on both sides.

c. The mental protuberance should superimpose the anterior frontal bone.

d. Part of the sella turcica should be seen within the foramen magnum.

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

Select one:

a. auditory canal

b. dorsum sellae

c. greater wing

d. petrous portion

Which of the following skull types is considered average in size and shape?

Select one:

a. mesocephalic 

b. brachycephalic

c. dolichocephalic

At which positioning landmark should the CR exit for a PA axial, Caldwell projection of the skull?

Select one:

a. Acanthion

b. Nasion

c. Infraorbital margin

d. Glabella

Under which of the following circumstances would a SMV projection be contraindicated?

Select one:

a. Suspicion of cervical injury 

b. Patient discomfort

c. Patient unable to extend the neck adequately

d. Breathing difficulty

On which cranial bone is the perpendicular plate located?

Select one:

a. Temporal

b. Parietal

c. Sphenoid

d. Ethmoid 

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

Select one:

a. sella turcica

b. foramen ovale

c. hypoglossal canal

d. foramen magnum

The cranial bones are rigidly jointed together by articulations called:

Select one:

a. joints

b. bursae

c. sutures 

d. cartilage

How many bones make up the cranium?

Select one:

a. 4

b. 6

c. 8 

d. 10

The external landmark identified in the figure below is the: 
[image]

Select one:

a. glabella

b. acanthion

c. outer canthus 

d. infraorbital margin

The bone indicated in the figure below is the: 
[image]

Select one:

a. temporal

b. parietal 

c. occipital

d. sphenoid

Which evaluation criteria pertains to the PA projection of the skull?

Select one:

a. The orbital roofs should be superimposed.

b. The mental protuberance should superimpose the anterior frontal bone.

c. The distance from the lateral border of the skull to the lateral border of the orbit should equidistant on both sides. 

d. Part of the sella turcica should be seen within the foramen magnum.

Which projection of the skull can be correctly performed with the central ray angled 15 degrees?

Select one:

a. AP axial, Towne method

b. SMV

c. PA axial, Haas method

d. PA axial, Caldwell method 

The superior aspect of the sphenoid bone contains a deep depression that contains the:

Select one:

a. pituitary gland 

b. pineal gland

c. carotid sulcus

d. optic canal

With reference to the patient, where should the IR be centered for the PA projection of the skull?

Select one:

a. Nasion 

b. Glabella

c. Acanthion

d. Mental point

Which skull suture is located between the parietal bones?

Select one:

a. hyoid

b. coronal

c. sagittal 

d. squamosal

Which bone has condyles that articulate with the atlas of the cervical spine?

Select one:

a. temporal

b. occipital

c. parietal

d. foramen magnum

The landmark identified in the figure below is termed the: 
[image]

Select one:

a. nasion 

b. glabella

c. acanthion

d. inner canthus

The bone identified on the skull below is the: 
[image]

Select one:

a. temporal

b. parietal

c. zygoma

d. sphenoid

The pterygoid processes project inferiorly from which cranial bone?

Select one:

a. Temporal

b. Ethmoid

c. Frontal

d. Sphenoid 

For the AP axial projection, Towne method, of the skull, how many degrees and in which direction should the CR be directed when the IOML is perpendicular to the IR?

Select one:

a. 37 degrees caudad 

b. 30 degrees cephalad

c. 30 degrees caudad

d. 37 degrees cephalad

Which evaluation criteria pertains to the SMV projection of the skull?

Select one:

a. The mental protuberance should superimpose the anterior frontal bone. 

b. Part of the sella turcica should be seen within the foramen magnum.

c. The distance between the lateral border of the skull to the lateral border of the orbit should be equidistant on both sides.

d. The orbital roofs should be superimposed.

Which skull suture is found between the frontal and parietal bones?

Select one:

a. sagittal

b. coronal 

c. squamosal

d. lambdoidal

The topographic line identified in the figure below is the: 
[image]

Select one:

a. orbitomeatal line

b. mentomeatal line

c. acanthiomeatal line

d. infraorbitomeatal line

The part of the frontal bone indicated in the figure below is the: 
[image]

Select one:

a. bregma

b. lambda

c. glabella 

d. acanthion