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skull and facial bones Flashcards

(79 cards)

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1
Q

what are the 3 regions of the cranial floor

A

anterior cranial fossa
middle cranial fossa
posterior cranial fossa

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2
Q

what houses the frontal lobe of the cerebrum

A

anterior cranial fossa

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3
Q

what houses the temporal lobes of the cerebrum

A

middle cranial fossa

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4
Q

what houses the cerebellum, pons, medulla oblongata

A

posterior cranial fossa

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5
Q

what is the vertical part of the frontal bone called

A

frontal squama

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6
Q

where are the frontal sinuses

A

frontal squama

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7
Q

what does the frontal bone articulate with

A

parietal bones
sphenoid
ethmoid
nasal bones
zygoma

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8
Q

what is the widest portion of the skull

A

parietal eminences

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9
Q

what do the parietal bones articulate with

A

frontal
temporal
occipital
sphenoid
other parietal bone

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10
Q

what is the posteroinferior part of the skull

A

occipital bone

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11
Q

what are the four parts of the occipital bone

A

squama
occipital condyles (2)
basilar portion

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12
Q

what specific parts of the skull form the atlantooccipital joint

A

the occipital condyles

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13
Q

what vein is in the jugular foramen

A

internal jugular vein

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14
Q

what articulates with the occipital bone

A

parietal bones
temporal
sphenoid
C1

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15
Q

what are the 4 portions of the temporal bones

A

squamous portion
tympanic portion
petrous ridges
mastoid process

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16
Q

where id the zygomatic process of the temporal bone

A

squamous portion

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17
Q

what forms the zygomatic arch

A

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

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18
Q

what forms the temporalmandibular joint (TMJ)

A

condyle of mandible and mandibular fossa

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19
Q

which way to the petrous ridges project

A

anteriorly and medially

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20
Q

what is a good landmark for top of petrous ridges

A

top of ear attachment

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21
Q

on a mesocephalic skull what is the angle between the midsagital plane and the petrous ridges

A

47

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22
Q

on a brachycephalic skull what is the angle between the midsagital plane and the petrous ridges

A

54

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23
Q

on a dolichocephalic skull what is the angle between the midsagital plane and the petrous ridges

A

40

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24
Q

what is the keystone bone of the cranial floor

A

sphenoid

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25
what does the sphenoid articulate with
all other cranial bones
26
what are the makes up the sphenoid bone
body 2 lesser wings 2 greater wings 2 pterygoid processes
27
what is in the body of the sphenoid
2 sphenoid sinuses sella turcica
28
what houses the pituitary gland
sella turcica
29
where is the sella turcica compared to EAM
3/4" anterior and superior to the EAM
30
what are the anterior and posterior borders of the sella turcica called
anterior- tuberculum sellae posterior- dorsum sellae
31
which clinoid process is part of the sella turcica
posterior clinoid processes
32
what forms the posteriomedial portion of the roof of the orbits
lesser wings of sphenoid bones
33
what do the lesser wings of the sphenoid form
upper margin of superior orbital fissures anterior clinoid processes
34
what do the greater wings form
posterolateral walls of the orbits lower margin of superior orbital fissures
35
what foramen are in the greater wings
ovale rotundum spinosum
36
where is the ethmoid in relation to the sphenoid and nasal bones
anterior to sphenoid and posterior to nasal bones
37
what does the ethmoid form
anterior portion of anterior cranial fossa medial wall of orbits superior portion of nasal septum superior portion of sidwalls of nasal cavity
38
what makes up the ethmois bone
cribriform plate crista galli perpendicular plate lateral masses (not body)
39
where are the olafactory foramina
cribriform plate
40
what is the perpendicular plate
superior part of the bony nasal septum
41
where are the ethmoid sinuses
lateral masses
42
what nasal conchae do the lateral masses form
superior and middle
43
what suture is between the frontal and parietal bones
coronal
44
what is the suture between the parietal bones
sagittal
45
what is the suture between the occipital and both parietal bones
lambdoidal
46
what is the suture between the parietal and temporal bones
squamosal suture
47
what is the anterior end of the sagittal suture called
bregma
48
what is the posterior end of the sagittal suture called
lambda
49
what is the pterions
junction of the parietal, temporal, and greater wing of sphenoid
50
what is the asterions
posterior to the ear where the squamosal and lambdoidal sutures meet
51
what is the bregma called in an infant
anterior fontanel
52
what is the lambda in an infant called
posterior fontanel
53
what are the facial bones
Nasal bones (2) Lacrimal bones (2) Maxillary bones (2) Zygomatic bones (2) Palatine bones (2) Inferior Nasal Conchae (2) Vomer (1) Mandible (1)
54
what do the nasal bones articulate with
other nasal bone frontal bone (nasion) maxillae perpendicualr plate of ethmoid
55
what are the smallest bones in the face
lacrimal bones
56
where is the lacrimal bones in comparasion to nasal bones
posterior and lateral
57
what part of the orbits do the lacrimal bones form
anterior part of medial wall
58
where do the tear ducts pass through
lacrimal bones
59
what do the maxillary bones articulate with
every other facial bone except mandible and frontal and ethmoid bones
60
what do the maxillary bones form
lateral walls and most of the floor of nasal cavity part of floor of orbit 3/4 of hard palate
61
what is the purpose of the hard palate
seperates the oral and nasal cavities
62
what is in the body of the maxillae
maxillary sinuses anterior nasal spine 4 processes come off of body
63
what are the 4 processes of the maxillary bone
frontal zygomatic alveolar palatine
64
what does the frontal process of maxillary bone articulate with
frontal and nasal bones
65
what does the zygomatic process of maxillary bone articulate with
zygoma
66
what does the alveolar process of the maxillary bone articulate with
teeth
67
what does the palatine process of the maxillary bone articulate with
palatine bone
68
what do the zygomatic bones articulate with
frontal temporal sphenoid maxillary
69
what is the only movable skull bone
mandible
70
what are the 3 parts of the mandible
ramus body angle/gonion
71
what are the parts of the ramus of the mandible
mandibular condyle coronoid process mandibular notch (between the condyle and coronoid
72
what forms the TMJ
mandibular condyle articulates with mandibular fossa of the zygomatic process of the temporal bone
73
what are the parts of the mandibular body
Alveolar process Symphysis menti Mental protuberance Mental foramen
74
what forms the circumfrence of the orbits
Frontal, zygomatic, maxillary
75
what forms the roof of the orbits
* Mainly frontal bone (orbital plates) * Lesser wing of sphenoid
76
what forms the floor of the orbits
Maxillary, zygomatic, palatine
77
what forms the medial wall of the orbits
Ethmoid, lacrimal, maxillary
78
what forms the lateral wall of the orbits
Frontal process of zygomatic Greater wing of sphenoid
79
what does the hyoid bone articulate with
nothing

MRT (4 decks)

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