Facial & Nasal Bones Test

Question 1

The chin is also called the:

a.) symphisis
b.) mental protuberance
c.) mental foramina
d.) mental point

Answer 1

b.) mental protuberance

Question 2

The palantine is part of the _____________ bone.

a.) sphenoid
b.) maxilla
c.) lacrimal
d.) vomer

Answer 2

b.) maxilla

Question 3

Besides the petrous ridges, what other evaluation criteria should indicate an appropriately positioned waters?

Answer 3

equal distance between the lateral borders of the skull and the orbits on each side

Question 4

Where does the CR exit for a modified parietoacanthial (modified waters) projections of the facial bones?

a.) nasion
b.) acanthion
c.) glabella
d.) midorbits

Answer 4

b.) acanthion

Question 5

A radiograph of a submentovertex projection reveals that the mandible is superimposed over the ethmoid and sphenoid sinuses. Which of the following modifications will eliminate this problem?

a.) increase the flexion of the head and neck
b.) perform the axiolateral oblique instead of the submentovertex
c.) increase the extension of the head and neck
d.) perform the projection with the patient supine

Answer 5

c.) increase the extension of the head and neck

Question 6

All of the following are clearly demonstrated on the parietoacanthial projection (waters method) except:

a.) orbits
b.) maxillae
c.) zygomatic arches
d.) foramen magnum

Answer 6

d.) foramen magnum

Question 7

What is the largest immovable bone of the face?

a.) maxilla
b.) vomer
c.) zygomatic
d.) mandible

Answer 7

a.) maxilla

Question 8

How many facial bones are there?

a.) 24
b.) 22
c.) 8
d.) 14

Answer 8

d.) 14

Question 9

Which of the following cranial bones articulate with the frontal bone?

1.) parietal
2.) sphenoid
3.) temporal
4.) ethmoid
5.) maxilla

a.) 2, 3 and 4
b.) 1, 2, 4 and 5
c.) 2 and 5
d.) 1, 2 and 4

Answer 9

d.) 1, 2 and 4

Question 10

On a lateral view of the facial bones, no rotation is best evidenced by:

a.) superimposed petrous ridges
b.) superimposed maxillary sinuses
c.) superimposed nasal bones
d.) superimposed mandibular rami

Answer 10

d.) superimposed mandibular rami

Question 11

Which bone articulates with all other facial bones except the mandible?

a.) sphenoid
b.) ethmoid
c.) frontal
d.) maxilla

Answer 11

d.) maxilla

Question 12

A radiograph of a lateral projection of the facial bones reveals that the mandibular rami are not superimposed (one ramus is anterior to the other) what specific positioning error is present on this radiograph?

a.) rotation
b.) excessive flexion
c.) excessive extension
d.) tilt

Answer 12

a.) rotation

Question 13

A patient is unable to sufficiently hyperextend the neck for an SMV (shchueller) cranial iamge. How should the positioning setup be adjusted for an optimal image to be obtained?

a.) extend the patients neck as far as possible and use a perpendicular central ray
b.) align the central ray perpendicular to the OML
c.) align the central ray perpendicular to the IOML
d.) the image cannot be obtained

Answer 13

c.) align the central ray perpendicular to the IOML

Question 14

Where are the petrous ridges seen on a PA caldwell radiograph of the facial bones ?

a.) in the lower third of the orbits
b.) superior to the maxillary sinuses
c.) fill the orbits
d.) in the middle of the maxillary sinuses

Answer 14

a.) in the lower third of the orbits

Question 15

The CR for lateral nasal bones enters at:

a.) the glabella
b.) the nasion
c.) 1/2’’ distal to the nasion
d.) 1/2’’ superior to the acanthion

Answer 15

c.) 1/2’’ distal to the nasion

Question 16

Which positioning line is placed perpendicular to the plane of the image receptor for the parietoacanthial (waters) projection?

a.) acanthiomeatal
b.) lips meatal
c.) mentomeatal
d.) orbitomeatal

Answer 16

c.) mentomeatal

Question 17

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

a.) conchae
b.) perpendicular plate
c.) septal cartilage
d.) pterygoid processes

Answer 17

a.) conchae

Question 18

Which line should be perpendicular to the IR for the modified waters position?

a.) LML
b.) MML
c.) OML
d.) IPL

Answer 18

a.) LML

Question 19

For a lateral projection of the facial bones, the IR is centered to the:

a.) outer canthus
b.) acanthion
c.) nasion
d.) zygomatic bone

Answer 19

d.) zygomatic bone

Question 20

Which facial bone formed the majority of the hard palate?

a.) maxilla
b.) vomer
c.) mandible
d.) zygomatic

Answer 20

a.) maxilla

Question 21

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

a.) 10 to 11 degrees
b.) 8 to 9 degrees
c.) 7 to 8 degrees
d.) 5 to 6 degrees

Answer 21

c.) 7 to 8 degrees

Question 22

The cheek bone is part of which facial bone?

a.) zygomatic
b.) frontal
c.) mandible
d.) maxilla

Answer 22

a.) zygomatic

Question 23

The lateral projection of the facial bones clearly demonstrates:

a.) the maxillae in their entirety
b.) the petromastoid portions in their entirety
c.) all facial bones in their entirety
d.) the petrous ridges in their entirety

Answer 23

c.) all facial bones in their entirety

Question 24

The central ray is directed perpendicular to which reference line for the SMV projection?

a.) AML
b.) IOML
c.) MML
d.) OML

Answer 24

b.) IOML

Question 25

The submentovertical (basilar) skull projection demonstrates:

a.) the frontal bone, the frontal and ethmoid air cells, facial bones, orbital margin, and the mandibular condyles and rami
b.) the petous pyramids , the mastoid processes, the foramina ovale and spinosum, the mandible, the sphenoid and ethmoid sinuses, the foramen magnum , the zygomatic arches, the nasal passages, and the occipital bone
c.) the occipital bone, the petrous ridges, the mastoid air cells, and the foramen magnum with the dorsum sell and posterior clinoid processes projected within its shadow
d.) the ethmoid sinus, the sphenoid sinus, the sella turcica, the petrous pyramids, the mandibular rami, and teh occipital bone

Answer 25

B

Question 26

The two smallest bones in the skull are the:

a.) sphenoid
b.) ethmoid
c.) lacrimal
d.) nasal

Answer 26

c.) lacrimal

Question 27

The inferior portion of the hard palate is formed by the:

a.) zygomatic
b.) maxilla
c.) palatine
d.) mandible

Answer 27

c.) palatine

Question 28

The parietoacanthial (waters) projection is often modified so there is less angulation of the facial bones. For this modification, OML forms an angle of ________________ degrees to the plane of the IR

a.) 55
b.) 60
c.) 37
d.) 30

Answer 28

a.) 55

Question 29

Where are the petrous ridges seen on a modified parietoacanthial (modified waters method) radiograph?

a.) in the maxillary sinus
b.) superior to the maxillary sinuses
c.) in the lower portion of the maxillary sinuses
d.) inferior to the floor of the maxillary sinuses

Answer 29

c.) in the lower portion of the maxillary sinuses

Question 30

The two l shaped facial bones that have both horizontal and vertical plates are the:

a.) sphenoid
b.) palatine
c.) ethmoid
d.) mandible

Answer 30

b.) palatine

Question 31

ALl of the following facial bones are in pairs ( have a right and left side) exceptt for which bone?

a.) nasal
b.) lacrimal
c.) vomer
d.) maxilla

Answer 31

c.) vomer

Question 32

Which of the following terms describes the junction of the two nasal bones?

a.) supraorbital groove
b.) glabella
c.) acanthion
d.) nasion

Answer 32

d.) nasion

Question 33

The modified parietoacanthial (modified waters) projection requires more extension of the head and neck as compared to the parietoacanthial (waters) projection.

a.) true
b.) false

Answer 33

b.) false

Question 34

The tear duct passes through a foramen in which bone?

a.) nasal
b.) maxilla
c.) zygomatic
d.) lacrimal

Answer 34

d.) lacrimal

Question 35

What two bones form the roof of the mouth?

a.) ethmoid
b.) palatine
c.) maxilla
d.) zygoma

Answer 35

b.) palatine
c.) maxilla

Question 36

The thin single plate of bone situated along the MSP of floor of nasal cavity is called the:

a.) sphenoid
b.) vomer
c.) ethmoid
d.) palatine

Answer 36

b.) vomer

Question 37

Which of the following is true regarding positioning for the waters method?
1.) the orbitomeatal line forms a 37 degree angle with the plane of the cassette
2.) the mentomeatal line is perpendicular to the cassette plane
3.) the coronal plane is perpendicular to the cassette plane

a.) 1, 2 and 3
b.) 2 and 3
c.) 1 and 3
d.) 1 and 2

Answer 37

d.) 1 and 2

Question 38

For a lateral facial bones projection, the chin should be adjusted so the IOML is perpendicualr to the IR

a.) true
b.) false

Answer 38

b.) false

Question 39

Which three cranial bones articulate directly with the zygomatic bone?

a.) frontal, ethmoid, temporal
b.) ethmoid, parietal, frontal
c.) frontal, sphenoid, temporal
d.) sphenoid, frontal, occipital

Answer 39

c.) frontal, sphenoid, temporal

Question 40

The pituitary gland (hypohysis cerebri) is associated with and protected by the _____ bone.

a.) sphenoid
b.) palatine
c.) temporal
d.) ethmoid

Answer 40

a.) sphenoid

Question 41

The CR for a PA caldwell of the facial bones is:

a.) 15 degree caidal
b.) 25 degrees caudal
c.) 15 degrees cephalad
d.) perpendicular

Answer 41

a.) 15 degree caudal

Question 42

Which line should be perpendicular to the IR for a modified waters position?

a.) OML
b.) MML
c.) IPL
d.) LML

Answer 42

d.) LML