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MRT > Anatomy - facial bones > Flashcards

Anatomy - facial bones Flashcards

1
Q

What is the smallest facial bone?

A

lacrimal

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2
Q

Where do the tear ducts pass?

A

lacrimal bone area

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3
Q

What joins the facial and nasal bone

A

Naison

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4
Q

List facial bones

A

nasal, lacrimal, zygomatic, maxillary, mandible, palatine, inferior nasal conchae, vomer

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5
Q

what does the nasal bone form

A

nose bridge

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6
Q

Nasal bone articulations

A

Opposite nasal bone, maxillae, frontal bone (naison), ethmoid plate

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7
Q

what facial bone articulates with all except mandible

A

maxillary

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8
Q

What skull bones do the maxillary articulate with

A

frontal and ethmoid

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9
Q

What does the maxillary bone form?

A

3/4 of the hard palate (formed in palatine process), part of orbit floor, part of the lateral walls and floor of nasal cavity

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10
Q

Hard palate purpose

A

helps chew, separates nasal cavity from oral cavity

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11
Q

Which facial bone forms cheek bones

A

Zygoma

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12
Q

Maxillary processes

A

Frontal process of maxillae, Zygomatic process of maxillae, Alveolar process of maxillae, Palatine process of maxillae

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13
Q

If palatine process is not fused together, what is needed, why?

A

surgery - because sucking is important as an infant

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14
Q

What forms the other 1/4 of the palate?

A

palatine bone

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15
Q

articulations of zygomatic bone

A

temporal, maxillary, sphenoid, frontal

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16
Q

What movement takes TMJ out of mandibular notch

A

Excursion

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17
Q

List paranasal sinuses

A

Frontal sinuses, sphenoid sinuses, ethmoid sinuses, maxillary sinuses

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18
Q

Largest, strongest, and only movable facial bone?

A

Mandible

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19
Q

Tip of chin is called?

A

Mental point

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20
Q

Foramen located in the mandible?

A

mental foramen

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21
Q

What forms the TM joint?

A

Condyle of mandible articulates with mandibular fossa (notch) of the zygomatic process of temporal bone

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22
Q

Mandibular fossa (notch) location?

A

Between mandibular condyle and coronoid

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23
Q

When imaging mandible laterally, how superior?

A

Past EAM to get all of mandible

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24
Q

What bones form the circumference of the orbit?

A

Frontal, zygomatic, maxillary

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25
Q

What bones form the roof of the orbit?

A

Orbital plates of the frontal bones mainly, and lesser wing of sphenoid

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26
Q

What bones form the floor of the orbit?

A

Maxillary*, zygomatic, palatine

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27
Q

Blow out fracture of the orbit

A

Hit - fracture of maxilla - bleeding / fluid into maxillary sinuses

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28
Q

Medial wall of orbit bones

A

maxillary, ethmoid, lacriminal

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29
Q

Purpose of hyoid

A

supports tongue

30
Q

Hyoid bone is suspended from?

A

Suspended from the styloid processes of the temporal bones

31
Q

What to include on lateral nasal projection?

A

anterior nasal spine and acanthion

32
Q

Zygomatic arch consist of?

A

temporal process of zygomatic bone and zygomatic process of the temporal bone

33
Q

3/4 of the hard palate is located in what process?

A

palatine process

34
Q

Location of inferior orbital fissure

A

between greater wing of sphenoid and maxillae

35
Q

Location of infraorbital foramen

A

between maxillary branch of trigeminal nerve

36
Q

Part between nose and teeth

37
Q

Frontal process of maxillae articulates with what?

A

nasal bone and frontal bone

38
Q

Facial bones are important for what?

A

chewing, expressions

39
Q

Vertical part of the palatine bone ascends where?

A

Ascends between maxilla and pterygoid processes of sphenoid

40
Q

What does the inferior nasal conchae help with?

A

Filter air before it passes to lungs

41
Q

Vomer bone location

A

Floor of nasal cavity

42
Q

mandible consist of

A

body, ramus, and angle/gonion

43
Q

What process is located in ramus of mandible

A

coronoid process

44
Q

What type of joint is the TM joint

A

hinge and gliding

45
Q

What structural classification is the TM joint

A

synovial / diarthrosis (movable)

46
Q

What do the sinuses do when you’re sick?

A

communicate with nasal cavity

47
Q

Purpose of paranasal sinuses

A

voice, decrease skull weight, moisten inhaled air, absorb shock

48
Q

Most superior paranasal sinus

A

Frontal sinuses

49
Q

Most inferior paranasal sinus

50
Q

Most posterior paranasal sinus

51
Q

How far laterally and inferiorly for maxillary projection

A

Lateral edges of orbits and top of teeth

52
Q

Largest paranasal sinus

53
Q

When imaging sphenoid sinuses, include how far posterior?

54
Q

Which paranasal sinus varies in size person to person

A

Frontal sinuses

55
Q

Sphenoid sinuses location

A

Body of sphenoid

56
Q

How far up for frontal sinuses collimation wise

57
Q

There are 2 each of the paranasal sinuses, except for one, which one has more than 2?

A

Ethmoid sinuses have 3 (anterior, middle, posterior)

58
Q

Location of maxillary sinuses

A

body of maxillae

59
Q

What is the floor of the maxillary sinuses called

A

maxillary antrum

60
Q

Open mouth projection (waters) shows which paranasal sinus?

61
Q

Is the medial wall or lateral wall of the orbit the thickest? which is the thinnest?

A

Thickest: lateral, Thinnest: medial

62
Q

lateral wall of orbit contains

A

Frontal process of zygoma and greater wing of sphenoid

63
Q

What does the vomer bone form

A

inferior portion of the bony nasal septum

64
Q

What muscles attach at the mandible condyle

65
Q

C1 landmark for

A

mastoid tip

66
Q

C2-3 landmark for

A

mandible angle/gonion

67
Q

C3-4 landmark for

A

hyoid bone

68
Q

what is the Anterior nasal spine called

69
Q

What bone is superior to orbital fissure

A

lesser wing of sphenoid

70
Q

What bone is inferior to orbital fissure

A

greater wing of sphenoid

71
Q

Whats the only bone the hyoid articulates with

72
Q

When imaging TM J

A

have mouth open and closed

MRT (12 decks)

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