Skull Review

Question 1

Which positioning landmark is located at the most superior point of the nasal bones?

Answer 1

Nasion

Question 2

Which positioning landmark is the smooth elevation that is located between the superciliary arches?

Answer 2

Nasion

Question 3

Which suture articulates the frontal bone with both parietal bones?

Answer 3

Coronal

Question 4

Which suture joins both parietal bones with occipital bone?

Answer 4

Lambdoidal

Question 5

The bregma fontanelle is located at the junction of which two sutures?

Answer 5

coronal and sagittal

Question 6

The lambda fontanelle is located at the junction of which two sutures?

Answer 6

lambdoidal and sagittal

Question 7

The bregma fontanelle is located at the junction of which cranial bones?

Answer 7

frontal and both parietals

Question 8

Which skull classification refers to a long, narrow skull?

Answer 8

Dolichocephalic

Question 9

Which skull classification refers to a short, wide skull?

Answer 9

Brachycephalic

Question 10

Which skull classification refers to a typical skull?

Answer 10

Mesocephalic

Question 11

How many degrees are in the angle formed between the midsagittal plane and the petrous pyramids in the mesocephalic skull?

Answer 11

47 degrees

Question 12

How many degrees are in the angle formed between the midsagittal plane and the petrous pyramids in the brachycephalic skulls?

Answer 12

54 degrees

Question 13

How many degrees are in the angle formed betwen the midsagittal plane and the petrous pyramids in the dolichocephalic skulls?

Answer 13

40 degrees

Question 14

On which cranial bone is the cribriform plate located?

Answer 14

Ethmoid

Question 15

The pterygoid processes project inferiorly from which cranial bone?

Answer 15

Sphenoid

Question 16

Which bones comprise the bridge of the nose?

Answer 16

Nasal

Question 17

Where is the vomer bone found?

Answer 17

On the floor of the nasal cavity

Question 18

Which term refers to the anterior process of the mandibular ramus?

Answer 18

Coronoid

Question 19

Which term refers to the posterior process of the mandibular ramus?

Answer 19

Condyle

Question 20

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

Answer 20

Orbitomeatal line and midsagittal plane

Question 21

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

Answer 21

2 inches above the EAM

Question 22

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

Answer 22

Infraorbitomeatal line

Question 23

Which projection of the skull produces a full basal image of the cranium?

Answer 23

SMV, Schuller method

Question 24

Which projection of the skull should be obtained when the frontal bone is of primary interest?

Answer 24

PA with perpendicular central ray

Question 25

For the PA axial projection, Haas method, of the skull, where should the central ray enter the patient's head?

Answer 25

1.5 inches below the external occipital protuberance

Question 26

How many degrees and in which direction should the central ray be directed for the PA axial projection, Haas method, of the skull?

Answer 26

25 degrees cephalad

Question 27

Which evaluation criterion pertains to the PA axial, Haas method, of the skulls?

Answer 27

The dorsum sella and posterior clinoids projected within the foramen magnum.

Question 28

Which positioning line extends from the EAM to the outer canthus?

Answer 28

Orbitomeatal

Question 29

Which positioning landmark is located at the base of the nasal spine?

Answer 29

Acanthion

Question 30

Which positioning landmark is most superior?

Answer 30

Glabella

Question 31

Where on the skull is the gonion located?

Answer 31

On the lateroposterior part of the mandible

Question 32

Where on the skull is the outer canthus located?

Answer 32

On the lateral border of each orbit

Question 33

Which positioning landmark is located at the anterior portion of the anterior portion of the mandible?

Answer 33

Mental point

Question 34

Which suture joins both parietal bones at the vertex

Answer 34

Sagittal

Question 35

Which suture join a parietal bones with both a sphenoid bone and a temporal bone?

Answer 35

Squamosal

Question 36

the lambda fontanelle is located at the junction of the which cranial bones?

Answer 36

Occipital and both parietals

Question 37

On which cranial bone are the superciliary arches located?

Answer 37

Frontal

Question 38

On which cranial bone is the crista galli located?

Answer 38

Ethmoid

Question 39

Which cranial bone has a petrous pyramids?

Answer 39

Temporal

Question 40

On which cranial bones is the sella turciaca located

Answer 40

Sphenoid

Question 41

Which cranial bone has the mastoid process?

Answer 41

Temporal

Question 42

On which cranial bone is the perpendicular plate located?

Answer 42

Ethmoid

Question 43

Which cranial bone has both greater and lesser wings?

Answer 43

Sphenoid

Question 44

Which cranial bone does the first cervical vertebra articulate?

Answer 44

Occipital

Question 45

The foramean magnum is a part of which cranial bone?

Answer 45

Occipital

Question 46

Form which cranial bone does the zygomatic process arise?

Answer 46

Temporal

Question 47

The EAM is a part of which cranial bone?

Answer 47

Temporal

Question 48

The temporal process projects posteriorly from which facial bone?

Answer 48

Zygomatic

Question 49

With which bone does the mandible articulate?

Answer 49

Temporal

Question 50

Where are the lacrimal bones located?

Answer 50

On the medial wall of each orbits

Question 51

Which bone comprises most of the lateral wall of the orbital cavities?

Answer 51

Zygomatic

Question 52

Which facial bones have alveolar processes?

Answer 52

maxillae and mandible

Question 53

Which bones form the posterior one fourth of the roof of the mouth?

Answer 53

Palatine

Question 54

Which postioning landmark is located on the maxillae?

Answer 54

Acanthion

Question 55

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

Answer 55

IP: perpendicular; MSP: parallel

Question 56

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

Answer 56

30 degrees caudad

Question 57

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

Answer 57

37 degree caudad

Question 58

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

Answer 58

AP axial, Towne method

Question 59

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

Answer 59

PA axial, Caldwell method

Question 60

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

Answer 60

PA axial, Caldwell method

Question 61

Which evaluation criterion pertains to the AP axial projection, Towne method, of the skulls?

Answer 61

Part of the sella turicica should be seen within the foramen magnum.

Question 62

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

Answer 62

The distance from the lateral border of the skull to the lateral border of the orbits should be the same on both sides

Question 63

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

Answer 63

The orbital roofs should be superimposed

Question 64

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

Answer 64

The mental protuberance should superimposed the anterior frontal bone.