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1005 Anatomy & Physiology > facial bones > Flashcards

facial bones Flashcards

1
Q

how many facial bones are there

A

14

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2
Q

what are facial bones for

A

mastication and facial expressions

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3
Q

what do the nasal bones articulate with (4)

A

the other nasal bone
frontal bone (nasion)
maxillae
perpendicular plates of ethmoid

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4
Q

what are the facial bones (8)

A

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

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5
Q

what do the nasal bones form

A

the bridge of the nose

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6
Q

where are the lacrimal bones (in relation to nasals)

A

posterior and lateral to nasal bones

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6
Q

why is the nasal bone image so widely collimated

A

to include the anterior nasal spine

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7
Q

what is/are the smallest bone(s) in the face

A

the lacrimal bones

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8
Q

what passes through the lacrimal bones

A

the tear ducts

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9
Q

what do the maxillary bones articulate with

A

every other facial bone except the mandible,
plus the frontal and ethmoid bones

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9
Q

what do the maxillary bones form (3)

A

part of lateral walls and floor of nasal cavity
part of the floor of the orbits
3/4 of the hard palate

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10
Q

why is the maxillary bone important to mastication

A

it forms the hard surface to help in making a bolus of food

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11
Q

what does the maxillary body contain

A

the maxillary sinuses

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12
Q

what makes up the hard palate?

A

3/4 maxillary
1/4 palatine

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12
Q

what is outside of the anterior nasal spine

A

acanthion

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13
Q

what are the 4 processes that come from the maxillary body

A

frontal
zygomatic
alveolar
palatine

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13
Q

what is the most important process in lateral facial imaging

A

zygomatic process of the maxilla

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14
Q

what does the frontal process of the maxilla articulate with

A

the nasal bone and frontal bone

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15
Q

what does the zygomatic process of the maxilla articulate with

A

the zygoma

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15
Q

what does the alveolar process of the maxilla articulate with

A

8 teeth

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16
Q

what does the palatine process of the maxilla articulate with

A

the palatine bones

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17
Q

how does the zygomatic bone appear on lateral facial/orbit projections

A

triangular

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18
Q

what happens when the 2 palatine processes do not fuse together

A

forms a cleft palate

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18
Q

where is the inferior orbital fissure

A

between the greater wing of the sphenoid and the maxilla

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19
Q

what is the infraorbital foramen for

A

maxillary (2nd) branch of the trigeminal nerve

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20
Q

what do the zygomatic bones form

A

the cheek bones (malar)

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20
Q

what do the inferior nasal conchae form

A

inferior wall of the nasal cavity

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20
Q

what do the zygomatic bones articulate with (4)

A

frontal
temporal
sphenoid
maxillary

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20
Q

what forms the zygomatic arch

A

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

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20
Q

what shape are palatine bones

A

“L” shaped

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20
Q

what is the longest and strignest facial bone

A

the mandible

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21
Q

what does the horizontal part of palatine bone form

A

the posterior 1/4 of the hard palate

21
Q

what do the 3 pairs of nasal conchae do

A

increase the surface area of the nasal cavity
help swirl and filter air before in goes into the lungs

21
Q

what does the vomer form

A

inferior portion of the bony nasal septum

22
Q

how many facial bones move?
which one(s)

A

1, the mandible

23
Q

what is the vertical part of the mandible

A

the ramus

23
Q

what does the mandibular ramus have

A

mandibular condyle
coronoid process

24
Q

where is the mandibular notch

A

area between the coronoid process and condyle

24
Q

what process is a part of the mandibular ramus

A

the coronoid process

24
Q

what is the mental protruberance

A

the very tip of the chin

24
Q

what forms the TMJ

A

mandibular condyle articulates with the mandibular fossa of the zygomatic process of the temporal bone

24
Q

what is the mandibular coronoid process

A

an attachment for the temporalis muscle

25
Q

what is the alveolar process on the mandible

A

the articulation for the teeth

26
Q

what is the name of the connection between the mental protruberance and the EAM

A

mentalmeatal line

26
Q

TMJ

A

temporomandibular joints

27
Q

what is the TMJ

A

condyle of the mandible articulates with the mandibular fossa of the zygomatic process of the temporal bone

27
Q

where is the TMJ

A

anterior and slightly superior to the EAM

27
Q

what joint type is the TMJ

A

synovial, diarthrosis
hinge and gliding

28
Q

what is excursion

A

the amount that the condyle moves

28
Q

what are the 4 paranasal sinuses

A

frontal sinuses
sphenoid sinuses
ethmoid sinuses
maxillary sinuses

29
Q

what are the 4 purposes of the paranasal sinuses

A

resonating chamber for voice
decrease the weight of the skull
help warm and moisten inhaled air
act as a shock absorber

29
Q

how many frontal sinuses is typical

A

2

29
Q

where are the frontal sinuses located

A

between the 2 tables of squama

29
Q

how many sphenoidal sinuses is typical

A

2

30
Q

where are the ethmoidal sinuses

A

in the lateral masses of the ethmoid

31
Q

what is the range of anterior ethmoid sinuses

A

2-8

32
Q

what is the range of middle ethmoid sinuses

A

2-8

33
Q

what is the range of posterior ethmoidal sinuses

A

2-6

33
Q

what are the largest paranasal sinuses

A

maxillary

33
Q

where are the maxillary sinuses

A

in the body of the maxillae

34
Q

what shape are the maxillary sinuses from frontal and lateral views

A

frontal: pyramid shaped
laterally: more cube shaped

34
Q

what is the floor of the maxillary sinus called

A

maxillary antrum

34
Q

how many cranial and facial bones compose the orbits

A

3 cranial
4 facial

35
Q

what cranial bones compose the orbits

A

frontal
sphenoid
ethmoid

36
Q

what facial bones compose the orbits

A

palatine
zygomatic
lacrimal
maxillary

37
Q

what bones form the circumference of the orbit

A

frontal, zygomatic, maxillary

38
Q

what bones form the roof of the orbit

A

mainly frontal
lesser wings of sphenoid

38
Q

what bones form the floor of the orbits

A

maxillary
zygomatic
palatine

39
Q

what bones form the medial wall of the orbit

A

ethmoid
lacrimal
maxillary

39
Q

what is the thinnest portion of the orbots

A

the medial wall

40
Q

what bones form the lateral wall of the orbit

A

frontal process of the zygomatic
greater wing of the sphenoid

41
Q

what is the thickest portion of the orbits

A

the lateral wall

42
Q

what does the hyoid articulate with

A

jokes. nothing

43
Q

what shape is the hyoid

A

u-shaped

44
Q

how is the hyoid held in place

A

suspended from the styloid processes of the temporal bones by muscles and ligaments

45
Q

where is the hyoid

A

located in the anterior part of the neck between the mandible and larynx

46
Q

what is the purpose of the hyoid

A

to support the tongue

47
Q

what could cause a hyoid fracture

A

strangulation

1005 Anatomy & Physiology (10 decks)

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