Test 3

Question 1

How much difference is there between the OML and IOML positioning lines?

Answer 1

7° to 8°

Question 2

Which two bones form the bony nasal septum?

Answer 2

Ethmoid and vomer

Question 3

Which cranial bone possesses the zygomatic process?

Answer 3

temporal

Question 4

A radiograph of a lateral projection of the cranium reveals that the orbital roofs (plates) are not superimposed—one is slightly superior to the other. Which of the following positioning errors led to this radiographic outcome?

Answer 4

tilt

Question 5

Which cranial bone contains the foramen ovale?

Answer 5

sphenoid

Question 6

An average-shaped skull with a 47° angle between the petrous pyramids and the midsagittal plane is classified as:

Answer 6

mesocephalic

Question 7

The slight depression above each eyebrow is termed the:

Answer 7

supraorbital groove.

Question 8

What is the name of the joint found between the lateral condylar processes of the skull and the atlas of C1?

Answer 8

Atlanto-occipital joint

Question 9

A radiograph of a posteroanterior (PA) axial projection (Caldwell method) of the cranium reveals that the petrous ridges are located at the level of the lower one-third of the orbits. The technologist performed this projection with the CR angled 15° caudad to the orbitomeatal line (OML). How must positioning be altered if a repeat exposure is performed?

Answer 9

None of the above; positioning was correct.

Question 10

Which of the following sutures separates the parietal from the occipital bone?

Answer 10

Lambdoidal

Question 11

T or F: The sensory apparatus of both equilibrium and hearing are contained in the internal ear.

Answer 11

True

Question 12

The pituitary gland (hypophysis cerebri) is associated with and protected by the ____ bone.

Answer 12

sphenoid

Question 13

A patient enters the emergency department (ED) with a possible basilar skull fracture. Which of the following skull projections would best demonstrate any blood present in the sphenoid sinus?

Answer 13

Horizontal beam lateral projection

Question 14

Which cranial bone possesses the sella turcica?

Answer 14

Sphenoid

Question 15

Which one of the following positioning errors most often results in a repeat exposure of a cranial position?

Answer 15

Incorrect rotation and tilt

Question 16

Where is the CR centered for a lateral projection of the cranium?

Answer 16

Two inches (5 cm) superior to EAM

Question 17

Which of the following terms describes the anterior fontanel found in the adult skull?

Answer 17

bregma

Question 18

Which of the following terms describes the small irregular bones occasionally found in the sutures?

Answer 18

Wormian

Question 19

Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne) projection with a 37° caudad CR angle?

Answer 19

IOML

Question 20

Which term describes the small flap of cartilage covering the opening to the ear?

Answer 20

Tragus

Question 21

There are a total of ____ fontanels in an infant.

Answer 21

six

Question 22

Which of the following landmarks corresponds with the level of the petrous ridge?

Answer 22

Top of ear attachment (TEA)

Question 23

Which sinus often produces an air/fluid level indicating a basilar skull fracture?

Answer 23

Sphenoid

Question 24

Which of the following structures are described as scroll-like projections found in the nasal cavity?

Answer 24

Conchae

Question 25

The left mastoid fontanel becomes the ____ in an adult.

Answer 25

left asterion

Question 26

T or F: The PA axial projection (Haas method) for the cranium requires a CR angle of 25° caudad.

Answer 26

false