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Rad Positioning > Chapter 11 - Facial Bones/Orbits/Nasal Bones > Flashcards

Chapter 11 - Facial Bones/Orbits/Nasal Bones Flashcards

1
Q

How many facial bones are there?

A

14

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2
Q

What are the 14 facial bones

A

2 maxillary
2 zygomatic
2 lacrimal
2 nasal
2 nasal conchae
2 palatine
1 vomer
1 mandible

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3
Q

What is the largest immovable bone of the face

A

Maxillary

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4
Q

Where are the maxillary bones anchored

A

Below the nasal septum

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5
Q

What are the 3 cavities that maxilla assists with

A

Mouth
Nasal cavity
One orbit

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6
Q

What are the 4 processes projecting from the body of maxilla

A

Frontal
Zygomatic
Alveolar
Palatine

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7
Q

What are embedded in cavities along the inferior margin of the alveolar process

A

Eight upper teeth

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8
Q

What do the palatine processes form

A

Roof of the mouth

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9
Q

Congenital defect where the palatine bones do not unite

A

Cleft palate

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10
Q

What forms the posterior part of the hard palate

A

Palatine bones

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11
Q

The zygomatic bones are located _______ to the zygomatic process

A

Lateral

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12
Q

The zymomatic bones form the prominent part of the __________ and make up the lower outer portion of each ________

A

Cheek
Orbit

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13
Q

What makes up the zygomatic arch

A

Zygomatic bone and zygomatic process of the temporal bone

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14
Q

Thinnest and most delicate bones of the body

A

Lacrimal and nasal bones

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15
Q

What does lacrimal mean

A

Tears

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16
Q

Lacrimal is the size and shape of a

A

Fingernail

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17
Q

Lacrimal is located _________ on the medial side of the orbit

A

Anteriorly

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18
Q

What forms the bridge of the nose

A

2 nasal bones

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19
Q

Where are the nasal bones in comparsion to the frontal process of the maxillae

A

Anterior and superior

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20
Q

Nasal conchae project from the ________ walls of the nasal cavities

A

Lateral

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21
Q

Superior and middle nasal conchae are formed from what bone

A

Ethmoid

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22
Q

Function of nasal conchae

A

Break the flow of air coming in through the nose

Cleans and warms the air as it comes in contact with the mucous membrane

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23
Q

Location of the vertical portion of the palatine bone

A

Between pterygoid plate of the sphenoid bone and maxilla

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24
Q

Horizontal portion of the palatine bone makes up

A

Posterior portion of the hard palate

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25
Q

What does vomer mean

A

Plowshare

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26
Q

What makes up the nasal septum

A

Vomer and perpendicular plate of the ethmoid bone

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27
Q

Anteriorly the bony nasal septum is cartilaginous and called the

A

Septal cartilage

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28
Q

Where does a deviated septum usually occur

A

Junction between the septal cartilage and the vomer

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29
Q

Surface of the vomer bone is marked by:

A

Small furrow-like depressions for blood vessels

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30
Q

Where is the source of the noseblood when these is trauma to the nose

A

Vomer

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31
Q

What is the thin/horse-shaped bone

A

Mandible

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32
Q

What is the largest facial bone

A

Mandible

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33
Q

What is the only moveable bone in the skull

A

Mandible

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34
Q

Mandible is 2 bones from birth until:

A

1 year

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35
Q

Angle of the mandible is also known as

A

Gonion

36
Q

Superior to the gonion is the

A

Ramus

37
Q

Both mandible bodies unite to form the

A

Symphysis Menti

38
Q

Frontal veiw of the mandible shows the

A

Body

39
Q

The depression below the symphysis menti is the

A

Mentum

40
Q

The very center of the mentum is the

A

Mental point

41
Q

What serves as a passage way for nerves and blood vessels located on each half of the mandible

A

Mental foramen

42
Q

What terminates in a “U” shaped notch

A

Ramus of the mandible

43
Q

What is the notch of the ramus called

A

Mandibular notch

44
Q

Each notch on the ramus has two processes, the most anterior process is the ___________ and the most posterior process is the ______

A

Coronoid process
Condyloid

45
Q

Where does the condyloid process fit into

A

TM fossa of the temporal bone

46
Q

What is the only moveable joint in the skull

A

TMJ

47
Q

What shape are the orbits

A

Cone

48
Q

Orbits - rim of the bone is called the

A

Base

49
Q

Orbits - the point of the cone whcih is most posterior is called the

A

Apex

50
Q

The apex of the optic bone corresponds to the

A

Optic foramen

51
Q

Due to the shape of the orbits, when the head is in a lateral position the OML is parallel to the floor and projects superiorly at a ______ angle and medial at a _________ angle

A

30 degree angle
37 degree angle

52
Q

How many bones is the orbit composed of

A

7

53
Q

What bones make up the circular base of the orbit

A

Maxilla
Frontal
Zygomas

54
Q

What bones make up the inside of the cone of the orbit

A

Sphenoid
Ethmoid
Lacrimal
Palatine

55
Q

What are the 3 holes in the orbit

A

Optic foramen
Superior orbital fissure
Inferior orbital fissure

56
Q

What is the optic foramen

A

A hole in the sphenoid bone located at the very posterior of the cone

57
Q

What is the superior orbital fissure

A

An opening between the greater and lesser wings of the sphenoid bone located lateral to the optic foramen

58
Q

Where is the inferior orbtial fissure

A

Located between maxilla, zygomatic bone, and the greater wing of the sphenoid

59
Q

What is the small piece of bone which is a portion of the lateral wall of the optic canal

A

Sphenoid strut

60
Q

What facial bones are located internally and not visible from the exterior skeleton

A

Palatine bones
Vomer

61
Q

What 2 facial bones are unpaired?

A

Mandible
Vomer

62
Q

Where is the anterior nasal spine

A

Upper part where the maxillae are united

63
Q

What is the superior aspect of the anterior nasal spine

A

Acanthion

64
Q

What is the air-filled cavity in the body of the maxillary bone

A

Maxillary sinus

65
Q

What type of joint is formed by the two palatine processes

A

Synarthrodial

66
Q

What part of the sphenoid is shown on the inferior view of the palatine bones

A

Pterygoid hamuli

67
Q

Zygomatic bones are also knwon as

A

Malar bones

68
Q

Inferior nasal conchae are also refered to as

A

Turbinates

69
Q

The vomer forms what portion of the nasal septum

A

Inferoposterior

70
Q

Where is the body of the mandible

A

Left angle around to right angle

71
Q

What is the ridge that extends along the superior portion of the body of the mandible

A

Alveolar process

72
Q

Flat triangular area below the symphysis menti

A

Mental protuberance

73
Q

What ramus process cannot be palpated and does not articulate with another bone

A

Coronoid process

74
Q

What are the two parts of the condyloid proces

A

Condyle/head and neck

75
Q

What part of the condyloid process fits in the TM fossa

A

Condyle

76
Q

When the mouth opens, the _______ and the _________ move forward

A

Condyle and fibrocartilage

77
Q

TMJ is a two-part synovial joint. What divides the upper and lower portions

A

Artciular fibrous disk

78
Q

What are the movement types of TMJ

A

Bicondylar
Plane (gliding)

79
Q

What type of joints are the teeth with the maxilla and mandible

A

Fibrous
Gomphosis

80
Q

What projection is used for open and closed mouth TMJ

A

Axiolateral (Schuller method)

81
Q

Where is TMJ compared to the EAM

A

Anterior and slightly superior

82
Q

What forms the roof of the orbit

A

Orbital plate of the frontal bone

83
Q

What forms the lateral walls of the orbit

A

Zygoma

84
Q

What forms the floor of the orbit

A

Zygoma and maxilla

85
Q

What cranial nerve is the optic nerve

A

CN II

86
Q

What cranial nerves go through the superior orbital fissure

A

CN III to CN VI

87
Q

What cranial nerve run through inferior orbital fissure

A

CN V

Rad Positioning (39 decks)

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