Skull

Question 1

Which cranial bone is best visualized on the AP Axial Towne method of the skull?

Answer 1

Occipital

Question 2

Which projection demonstrates the frontal bone with minimal distortion and superimposition?

Answer 2

PA Axial Caldwell method

Question 3

On a properly positioned PA Axial projection of the skull (Caldwell) the CR exits the

Answer 3

Nasion

Question 4

The articulation of the frontal bones with the nasal bones is known as the

Answer 4

Nasion

Question 5

The pterygoid process is a part of which bone?

Answer 5

Sphenoid

Question 6

On a Parietoacanthial projection of the sinuses, the petrous ridges should be

Answer 6

Projected below the maxillary sinuses

Question 7

The line that extends through the midline of the orbits is also known as

Answer 7

Interpupillary line

Question 8

Which facial bone is found in the medial wall of the orbit between the ethmoid and the maxilla?

Answer 8

Lacrimal

Question 9

When performing a lateral projection to evaluate the facial bones, the CR entrance point is

Answer 9

Midway between outer canthus and EAM

Question 10

In which bone are the optic foramina located?

Answer 10

Sphenoid

Question 11

The parietoacanthial projection of the sinuses (modified waters) best demonstrates which sinuses?

Answer 11

Sphenoid

Question 12

A properly positioned PA Axial Caldwell of the skull will project the petrous ridges

Answer 12

In the lower third of the orbits

Question 13

Which group of sinuses is located directly inferior and anterior to the sella turcica?

Answer 13

Sphenoidal

Question 14

Which three bones does the temporal bone articulate with?

Answer 14

Parietal, occipital, sphenoidal

Question 15

What is most likely indicated if an air fluid level is seen in the sphenoid sinus on a lateral skull radiograph?

Answer 15

Basal skull fracture

Question 16

The hard palate is formed by which bones?

Answer 16

Maxilla and palatine

Question 17

Which projection requires the patient to extend the neck until the IOML is parallel to the IR

Answer 17

SMV

Question 18

Which cranial bone contains a petrous portion and mastoid air cells?

Answer 18

Temporal bone

Question 19

Which sinuses are visualized on a properly positioned lateral projection?

Answer 19

Ethmoid, frontal, maxillary, sphenoid (ALL)

Question 20

Which radiographic positioning landmark corresponds to the location of the anterior nasal spine?

Answer 20

Acanthion

Question 21

When taking a PA Axial projection of the skull, the CR is directed

Answer 21

15 degrees caudad

Question 22

What is the name of the articulation between parietal bones?

Answer 22

Sagittal suture

Question 23

Which facial bones are best demonstrated on the PA Axial Caldwell

Answer 23

Orbits and zygoma

Question 24

A blowout fracture involves the

Answer 24

Floor of the orbits

Question 25

Where is the squamosal suture?

Answer 25

Between the parietal bones and temporal bones

Question 26

Which of the following is the positioning landmark located at the junction of the nose and upper lip?

Answer 26

Acanthion

Question 27

Which facial bone forms the inferior part of the nasal septum?

Answer 27

Vomer

Question 28

Which structure houses the pituitary gland?

Answer 28

Sella turcica

Question 29

Which projection of the cranium demonstrates the petrous ridges within the orbits?

Answer 29

PA

Question 30

What term is used to identify the angle of the mandible?

Answer 30

Gonion

Question 31

Which group of paransal sinuses is located directly inferior and anterior to the sella turcica?

Answer 31

Sphenoid

Question 32

In which bone are the optic foramina located?

Answer 32

Sphenoid bone

Question 33

What are the 8 bones of the skull?

Answer 33

Frontal, occipital, right and left parietal, right and left temporal, sphenoid, ethmoid

Question 34

What is the bony prominence on the frontal bone between the eyebrows that is a common positioning landmark?

Answer 34

Glabella

Question 35

The large round hole in the anterior portion of the occipital bone is called the

Answer 35

Foramen magnum

Question 36

What does the ethmoid bone form?

Answer 36

Anterior floor of the cranium

Question 37

What cranial bone is shaped like a bat?

Answer 37

Sphenoid

Question 38

What cranial bones do the temporal bones articulate with?

Answer 38

Sphenoid and occipital

Question 39

The EAM is the opening to the

Answer 39

Ear canal

Question 40

The parietal bones are joined by which suture?

Answer 40

Sagittal

Question 41

The joint that joins the parietal and temporal bones is which suture?

Answer 41

Squamosal

Question 42

Which facial bone is the largest immovable bone of the face and it articulates with all other facial bones besides mandible?

Answer 42

Maxilla

Question 43

The junction of the two maxillary bones forms a superior prominence called the

Answer 43

Anterior nasal spine

Question 44

Which facial bone is the only movable bone?

Answer 44

Mandible

Question 45

Which bone forms the inferior portion of the nasal septum?

Answer 45

Vomer

Question 46

Where is the CR directed in the AP Axial Towne projection of the skull?

Answer 46

30 degrees caudad, 2.5in superior to the glabella

Question 47

If patient cannot flex neck sufficiently to get OML perpendicular to IR in the AP Axial Towne projection, what can be done?

Answer 47

IOML can be placed perpendicular and CR angled 37 degrees caudad

Question 48

Where is the CR directed for a lateral projection of the skull?

Answer 48

2in superior to EAM

Question 49

Where is the CR directed for the Parietoacanthial Waters projection of the facial bones?

Answer 49

Acanthion

Question 50

Where is the CR directed for a lateral projection of the nasal bones?

Answer 50

1/2in inferior to nasion

Question 51

What is a cerebral concussion?

Answer 51

Traumatic brain injury caused by a blow to the head that causes brief unconsciousness

Question 52

What is a countrecoup injury?

Answer 52

A severe blow to the head may cause the brain the move within the cranium, producing an injury on the opposite side of the blow