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Flashcards in facial bones study guide Deck (98):
0

How many facial bones are there

14

1

Know what facial bones there are two of

◾️nasal
◾️lacrimal
◾️zygomatic
◾️palatine
◾️inferior nasal conchae
◾️maxillary

2

Which bones make the bridge of the nose

Nasal bones

3

Which facial bones are the smallest in the skull

Lacrimal

4

What is the purpose of the lacrimal foramen

Where the tear duct passes

5

Which facial bones are the largest immovable bones

Maxillary

6

The body of the maxilla contains the

Maxillary sinus

7

Where is the infraorbital foramen located? What bone is it on? What structure is it located under?

➡️located on the maxillary bone under each orbit

8

What is the alveolar process?

Inferior borders of spongy bone that support roots of teeth

9

The anterior nasal spine is part of what bone

Maxillary

10

The anterior nasal spine correlates with what landmark

Midline junction of maxillary

Acanthion

11

The prominence of the cheeks is formed by the

Zygomatic

12

Which process is part of the zygomatic bone

Temporal process

13

The zygomatic arch is formed by which two processes

Temporal and zygomatic

14

The L shaped facial bones are

Palatine

15

Which facial bone is scroll shaped

Inferior nasal conchae

16

The vomer forms what part of the nasal septum

Inferior nasal septum

17

What is the largest bone and densest bone of the face

Mandible

18

What portion is the body of the mandible

Horizontal

19

What portion is the rami of the mandible

Vertical

20

The angle of the mandible is also known as the

Gonion

21

The bump on the lower front of the mandible is called

Mental protuberance

22

The area where the right and left halves of the mandible have fused is called

Symphysis

23

Where the mental foramina located

Halfway between superior/inferior borders below 2nd premolar teeth

24

The mandibular notch is located between what two structures

Coronoid and condylar process

25

In the mandible which process is anterior and which is posterior?

➡️anterior-coronoid
➡️posterior- condylar

26

The condyle of the mandible articulates with what to form the TMJ?

Mandibular fossa of temporal bone

27

What shape is the hyoid bone?

U shaped

28

Where is the hyoid bone located?

Base of tongue

29

Does the hyoid bone attach to any other bone?

No

30

Can you do lateral facial bones upright or lying on the table?

Semi prone or seated upright

31

If you do the lateral facial bones on the table what position will the patients body be in?

Semiprone

32

On the lateral facial bone the MSP is _____ to the IR when doing a lateral skull

Parallel

33

The interpupillary line is _______ to the IR when doing a lateral skull

Perpendicular

34

The IOML is _____ to the IR when doing a lateral skull

Parallel

35

How do you place the film for lateral facial bones

Lengthwise

36

A right lateral demonstrates _____ side and the left lateral demonstrates the ____ side

◾️right
◾️left

37

What bone should be in the center of the lateral facial bone image

Zygomatic bone

38

What is superimposed on the lateral facial bones image

Mandibular rami and orbital roofs

39

What is touching the IR on the lateral facial image

Side of head

40

What is the CR for lateral facial bones

Perpendicular; enters pt on lateral surface of zygomatic bone halfway between the outer canthus and EAM

41

What structures do you see on the lateral facial bones

⚫️all facial bones entirely
⚫️zygomatic bone in center
⚫️SI mandibular rami
⚫️SI orbital roofs
⚫️no rotation of sella turcia

42

In the parietocanthial (waters) projection what will touch the IR

Chin

43

In the parietocanthial (waters) projection Where will the CR enter/exit?

Perpendicular; exit acanthion

44

In the parietocanthial (waters) projection the MML should be ____ to IR

Perpendicular

45

In the parietocanthial (waters) projection the OML should be ____ to the IR

37 angle

46

In the parietocanthial (waters) projection the MSP should be ____ to the IR

Perpendicular

47

In the parietocanthial (waters) projection where should the petrous ridges be seen

Below maxillary sinuses

48

In the parietocanthial (waters) projection you should collimator to the

Facial bones

49

In the acanthioparietal (reverse waters) projection what will touch the IR

Back of head

50

In the acanthioparietal (reverse waters) projection where will the CR enter/exit?

Enters acanthion

51

In the acanthioparietal (reverse waters) projection the MML should be ____ to the IR

Perpendicular

52

In the acanthioparietal (reverse waters) projection the OML should be ___ to the IR

37 angle

53

In the acanthioparietal (reverse waters) projection the MSP should be ____ to the IR

Perpendicular

54

In the acanthioparietal (reverse waters) projection where should the petrous ridges be seen

Immediately below maxillary sinus

55

In the acanthioparietal (reverse waters) projection you should collimator to the

Facial bones

56

In the acanthioparietal (reverse waters) projection for trauma what do you do differently

Adjusting the CR so that it enters the acanthion while remaining parallel with the MML

57

What's the difference in the waters and reverse waters images?

In the reverse waters the facial bones will be more magnified due to increased OID

58

How do you know this a Pa axial skull

Petrous ridges in the lower third of orbits

59

In the PA axial skull (Caldwell) the OML is ____ to IR

Perpendicular

60

In the PA axial skull (Caldwell) the MSP is _____ to the IR

Perpendicular

61

In the PA axial skull (Caldwell) what is touching the IR

Forehead and nose

62

In the PA axial skull (Caldwell) where does the CR exit

Nasion

63

In the PA axial skull (Caldwell) do you angle the cr if so hoe much and what direction?

15 caudal

64

In the PA axial skull (Caldwell) what structures do you see on this image?

Petrous ridges in the lower third

65

In the lateral nasal bones what patient position is used for this

Semi prone can be done upright

66

In the lateral nasal bones what lines do you use

◾️MSP parallel to tabletop
◾️IPL perpendicular to tabletop
◾️IOML parallel to IR

67

In the lateral nasal bones MSP ____ to tabletop

Parallel

68

In the lateral nasal bones IPL ___ to tabletop

Perpendicular

69

In the lateral nasal bones IOML ___ to IR

Parallel

70

In the lateral nasal bones what's the CR

Perpendicular to bridge of nose
Enters 1/2 distal to nasion

71

In the lateral nasal bones what needs to be included on the image

◾️anterior nasal spine
◾️nasal bones
◾️nasal septum

72

In the lateral nasal bones what type of technique will you use

Finger

73

In the lateral nasal bones is it done tabletop or Bucky?

Tabletop

74

In the SMV(Submentovertical) the IOML ___ with IR

Parallel

75

In the SMV(Submentovertical) MSP is ____ to IR

Perpendicular

76

In the SMV(Submentovertical) what is touching the IR

Top of head

77

In the SMV(Submentovertical) where does the CR enter or exit? You need to know both

Enters MSP of throat at a level 1 inch posterior to outer canthus/midway between condyles if mandible
Exit vertex

78

In the SMV(Submentovertical) the CR should pass at a level approximately ____ to the outer canthus

1 inch posterior

79

In the SMV(Submentovertical) preferably do this with the patient seated upright or supine?

Upright

80

In the SMV(Submentovertical) what structures do you see

◾️zygomatic arches free from overlying structures
◾️zygomatic arches symmetric and without foreshadowing

81

In the SMV(Submentovertical) do you decrease or increase exposure factors

Decrease

82

In the tangential zygomatic arch the IOML ___ to the IR

Parallel

83

In the tangential zygomatic arch MSP ___ to IR

15 toward side being examined

84

In the tangential zygomatic arch what is touching the IR

Top of head

85

In the tangential zygomatic arch the CR should pass at a level approximately to ____ the outer canthus

1 inch posterior

86

In the tangential zygomatic arch the cr is centered over the

Zygomatic arch

87

In the tangential zygomatic arch preferably do this with the patient upright or supine

Upright

88

In the tangential zygomatic arch what structures do you see on this image?

◾️zygomatic arches free of overlying structures
◾️zygomatic arch not over exposed

89

In the tangential zygomatic arch rotate the MSP ____ degrees ___ the side being examined. Then tilt the top of the head _____ degrees _____ from the side being examined. Why do we do this?

In the tangential zygomatic arch rotate the MSP 15 degrees toward the side being examined. Then tilt the top of the head 15 degrees away from the side being examined.

To ensure the CR is tangent to the lateral surface of the skull

90

In the AP axial (Townes method) for zygomatic arches OML is ____ or the IOML is _____ to IR

Perpendicular

91

In the AP axial (Townes method) for zygomatic arches MSP is _____ to IR

Perpendicular

92

In the AP axial (Townes method) for zygomatic arches what is touching the IR

Back of the head

93

In the AP axial (Townes method) for zygomatic arches where does the CR enter

Enter glabella

94

In the AP axial (Townes method) for zygomatic arches if using OML then the cr angle will be ___

30

95

In the AP axial (Townes method) for zygomatic arches if using the IOML thence angle will be

37

96

In the AP axial (Townes method) for zygomatic arches what structures do you see on this image

⚫️no overlap of zygomatic arches by mandible
⚫️no rotation evident because arches are symmetric
⚫️zygomatic arches projected lateral to mandibular rami

97

In the AP axial (Townes method) for zygomatic arches for trauma what will the angle be?

40-60 caudal