Deck 11: Cranium

Question 1

How many bones make up the face?

A) 4
B) 10
C) 12
D) 14

Answer 1

14

Question 2

The petromastoid portion is a part of which bone?

A) Temporal
B) Sphenoid
C) Occipital
D) Ethmoid

Answer 2

Temporal

Question 3

How many bones make up the cranium?

A) 4
B) 6
C) 8
D) 10

Answer 3

8

Question 4

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

A) Sagittal
B) Coronal
C) Squamosal
D) Lambdoidal

Question 5

All of the following are cranial bones except the:

A) maxillae.
B) frontal.
C) sphenoid.
D) occipital.

Question 6

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

A) sella turcica.
B) foramen ovale.
C) hypoglossal canal.
D) foramen magnum.

Question 7

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

A) Temporal
B) Sphenoid
C) Occipital
D) Ethmoid

Question 8

The bone identified in the figure below is the:

A) maxilla.
B) frontal.
C) mandible.
D) ethmoid.

Question 9

All of the following bones contain air sinuses,except:

A) frontal.
B) parietal.
C) ethmoid.
D) sphenoid.

Question 10

Which of the following is located in the middle ear?

A) Cochlea
B) Bony labyrinth
C) Tympanic membrane
D) External acoustic meatus

Question 11

Which skull suture is located between the parietal bones?

A) Hyoid
B) Coronal
C) Sagittal
D) Squamosal

Question 12

The bone indicated in the figure below is the:

A) temporal.
B) parietal.
C) occipital.
D) sphenoid.

Question 13

The zygomatic arches are a part of which bone?

A) Frontal
B) Parietal
C) Temporal
D) Sphenoid

Question 14

The bone indicated in the figure below is the:

A) parietal.
B) orbital.
C) temporal.
D) zygoma.

Question 15

Which of the following is located in the internal ear?

A) Concha
B) Auditory tube
C) Tympanic membrane
D) Semicircular canals

Question 16

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

A) Temporal
B) Occipital
C) Parietal
D) Foramen magnum

Question 17

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

A) auditory canal.
B) dorsum sellae.
C) greater wing.
D) petrous portion.

Question 18

The cranial bones are rigidly jointed together by articulations called:

A) joints.
B) bursae.
C) sutures.
D) cartilage.

Question 19

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

A) bregma.
B) lambda.
C) glabella.
D) acanthion.

Question 20

All of the following are facial bones except the:

A) ethmoid.
B) maxillae.
C) mandible.
D) zygomatic bones.

Question 21

The portion of the mandible identified in the figure below is the:

A) body.
B) ramus.
C) symphysis.
D) alveolar portion.

Question 22

Which method of examining the skull will demonstrate the petrous ridges in the orbits,the ethmoid and frontal sinuses,and the crista galli?

A) Towne
B) Caldwell
C) Schüller
D) Waters

Question 23

All of the following should be seen on a lateral image of the skull,except:

A) superimposed orbital roofs.
B) sella turcica in profile.
C) temporomandibular joints superimposed.
D) mandible overlapping cervical spine.

Question 24

Which plane of the head is placed parallel to the plane of the image receptor for a lateral projection of the skull?

A) Interpupillary
B) Transverse
C) Midsagittal
D) Midcoronal

Question 25

The central ray and center of the image receptor position for a lateral projection of the skull is _____ inch(es)_____ the EAM.

A) 1; below
B) 2; below
C) 1; above
D) 2; above

Question 26

Which skull type is narrow from side to side?

A) Mesocephalic
B) Dolichocephalic
C) Brachycephalic

Question 27

The part of the mandible identified in the figure below is the:

A) body.
B) ramus.
C) symphysis.
D) alveolar portion.

Question 28

The largest and most dense bone of the face is the:

A) maxilla.
B) mandible.
C) frontal.
D) sphenoid.

Question 29

The landmark identified in the figure below is the:

A) nasion.
B) glabella.
C) acanthion.
D) auricular point.

Question 30

The topographic line identified in the figure below is the:

A) orbitomeatal.
B) mentomeatal.
C) acanthiomeatal.
D) infraorbitomeatal.

Question 31

The topographic line shown in the figure below is the:

A) glabellomeatal.
B) orbitomeatal.
C) acanthiomeatal.
D) infraorbitomeatal.

Question 32

The external landmark identified in the figure below is the:

A) glabella.
B) acanthion.
C) outer canthus.
D) infraorbital margin.

Question 33

The central-ray angle for the PA axial (Caldwell)projection of the skull is:

A) 5 degrees cephalad.
B) 10 degrees cephalad.
C) 12 degrees caudad.
D) 15 degrees caudad.

Question 34

The small bone situated at the base of the tongue is the:

A) hyoid.
B) alveolar.
C) cornu.
D) styloid.

Question 35

Which of the following is perpendicular to the image receptor plane for a Caldwell projection of the skull?

A) Glabellomeatal line
B) Acanthiomeatal line
C) Orbitomeatal line
D) Mentomeatal line

Question 36

The landmark identified in the figure below is termed the:

A) nasion.
B) glabella.
C) acanthion.
D) inner canthus.

Question 37

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

A) 37 degrees
B) 40 degrees
C) 47 degrees
D) 54 degrees

Question 38

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

A) Mesocephalic
B) Brachycephalic
C) Dolichocephalic

Question 39

Which projection of the skull requires MSP be positioned parallel and interpupillary line perpendicular to the IR plane?

A) Lateral
B) PA axial (Caldwell)
C) AP axial (Towne)
D) SMV (Schüller)

Question 40

The maxillary sinus is located in which bone?

A) Temporal
B) Sphenoid
C) Maxilla
D) Ethmoid

Question 41

What is the central-ray angulation for the SMV projection?

A) 0 degrees
B) 5 degrees caudad
C) 5 degrees cephalad
D) 5 to 7 degrees cephalad

Question 42

The bones of the cranium are joined together by fibrous joints called:

A) diploë.
B) sulci.
C) sutures.
D) cartilage.

Question 43

How many bones are contained in the skull?

A) 8
B) 14
C) 22
D) 24

Question 44

Which of the following lines is placed perpendicular to the image receptor plane for the AP axial (Towne)projection?

A) Orbitomeatal line
B) Supraorbitomeatal line
C) Glabellomeatal line
D) Acanthiomeatal line

Question 45

What is the average central-ray angulation for the PA axial (Haas)projection of the skull?

A) 25 degrees caudad
B) 25 degrees cephalad
C) 30 degrees caudad
D) 30 degrees cephalad

Question 46

If the patient cannot flex the neck to place the orbitomeatal line perpendicular to the image receptor for an AP axial (Towne)projection,which line should be placed perpendicular?

A) Acanthiomeatal line
B) Infraorbitomeatal line
C) Glabellomeatal line
D) Mentomeatal line

Question 47

For an SMV projection of the cranial base,the central ray should always be perpendicular to the _____ line.

A) mentomeatal
B) orbitomeatal
C) infraorbitomeatal
D) acanthiomeatal

Question 48

Often a patient cannot be turned into the prone position for a PA axial projection of the skull (Caldwell method).What central-ray angle would be used if the AP axial projection is used instead?

A) 10 degrees caudad
B) 15 degrees cephalad
C) 10 to 15 degrees caudad
D) 10 to 15 degrees cephalad

Question 49

The suture identified on the figure below is the:

A) coronal.
B) squamosal.
C) sagittal.
D) lambdoidal.

Question 50

What is the central-ray angulation for demonstration of the entire foramen magnum during an AP axial (Towne)projection?

A) 37 degrees caudad
B) 40 degrees caudad
C) 60 degrees caudad
D) 40 to 60 degrees caudad

Question 51

Which line should be placed parallel to the plane of the image receptor for the SMV projection of the cranial base?

A) Acanthiomeatal line
B) Orbitomeatal line
C) Infraorbitomeatal line
D) Mentomeatal line

Question 52

The bone identified on the skull below is the:

A) temporal.
B) parietal.
C) zygoma.
D) sphenoid.

Question 53

For an AP axial (Towne)projection of the skull,the center of the IR is at or near the level of the:

A) foramen magnum.
B) EAM.
C) glabella.
D) acanthion.

Question 54

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

A) sulci.
B) sutures.
C) diploë.
D) fontanels.

Question 55

If the infraorbitomeatal line is placed perpendicular to the image receptor during an AP axial (Towne)projection of the skull,how much is the central ray angled?

A) 15 degrees caudad
B) 30 degrees caudad
C) 37 degrees caudad
D) 45 degrees caudad

Question 56

The suture located between the occipital bone and the parietal bones is the:

A) lambdoidal.
B) squamosal.
C) sagittal.
D) coronal.

Question 57

All are clearly demonstrated on an SMV projection of the cranial base,except:

A) carotid canals.
B) sphenoid sinuses.
C) mastoid process.
D) frontal sinuses.

Question 58

The x-ray projection demonstrated in the figure below is the:

A) SMV.
B) VSM.
C) AP axial.
D) PA axial.

Question 59

Radiographic demonstration of the cranial base is performed by which method?

A) Haas
B) Rhese
C) Towne
D) Schüller

Question 60

Which method of examining the skull is identified in the figure below?

A) Haas
B) Towne
C) Shüller
D) Caldwell

Question 61

What is the projection (method)demonstrated in the image below used to evaluate trauma to the orbit?

A) Parietoacanthial (Waters)
B) PA axial (Caldwell)
C) AP axial (Towne)
D) PA axial (Haas)

Question 62

Letter E in the diagram below of the orbit labels the:

A) sphenoid.
B) zygoma.
C) maxilla.
D) frontal.

Question 63

All of these structures are demonstrated on an AP axial (Towne method)projection of the skull,except:

A) foramen magnum.
B) frontal bone.
C) occipital bone.
D) petrous ridges.

Question 64

The base of the anterior portion of the occipital bone contains two large openings that allow blood vessels and nerves to pass through.These two openings are called the:

A) jugular foramina.
B) foramen magnum.
C) foramen ovale.
D) hypoglossal canal.

Question 65

The base of the temporal bone contains an opening through which the internal carotid artery passes and is termed the:

A) foramen spinosum.
B) foramen ovale.
C) foramen lacerum.
D) jugular foramen.

Question 66

Letter C in the diagram below of the orbit labels the:

A) ethmoid.
B) sphenoid.
C) lacrimal.
D) maxilla.

Question 67

Letter D in the diagram below of the orbit labels the:

A) ethmoid.
B) sphenoid.
C) lacrimal.
D) palatine.

Question 68

Which facial bone contains a foramen through which the tear duct passes?

A) Nasal
B) Palatine
C) Maxilla
D) Lacrimal

Question 69

What bone is labeled as letter B in the diagram below of the orbit?

A) Frontal
B) Zygoma
C) Maxilla
D) Sphenoid

Question 70

How many bones compose the bony orbit?

A) 5
B) 7
C) 9
D) 11

Question 71

Letter G in the diagram below of the orbit labels the:

A) frontal.
B) palatine.
C) maxilla.
D) lacrimal.

Question 72

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

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.

Question 73

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

A) pituitary gland.
B) pineal gland.
C) carotid sulcus.
D) optic canal.

Question 74

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

A) clivus.
B) foramen magnum.
C) sella turcica.
D) dorsum sellae.

Question 75

The opening into the apex of the orbit for the transmission of the optic nerve and ophthalmic artery is called the:

A) optic canal.
B) optic foramen.
C) foramen ovale.
D) foramen rotundum.

Question 76

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

A) clivus.
B) clinoid processes.
C) sella turcica.
D) dorsum sellae.

Question 77

The large aperture in the occipital bone,through which the medulla oblongata and spinal cord exit,is termed the:

A) foramen magnum.
B) basilar part.
C) occipital protuberance.
D) hypoglossal canal.

Question 78

The posterior half of the base of the skull is formed by which bone?

A) Temporal
B) Sphenoid
C) Occipital
D) Parietal

Question 79

Letter A in the diagram below of the orbit labels the:

A) ethmoid.
B) sphenoid.
C) lacrimal.
D) maxilla.

Question 80

The orbit is made up of _____ cranial bones and _____ facial bones.

A) three; four
B) two; five
C) four; five
D) three; two