Skull Flashcards
1
Q
Skull anatomy is comprised of - bones that are divided into 2 groups
A
22 Cranial 8 Facial 14
2
Q
Calvaria bones
A
Frontal Occipital r parietal l parietal
3
Q
Floor bones
A
Ethmoid Sphenoid R. temporal L. temporal
4
Q
Cranial bones are divided into
A
calvania and floor
5
Q
A
A
A. Parietal bone
6
Q
B
A
Glabella
7
Q
C
A
Greater wing of the sphenoid
8
Q
D
A
Nasal bone
9
Q
E
A
Temporal bone
10
Q
F
A
Zygomatic bone
11
Q
G
A
Perpendicular plate of the ethmoid
12
Q
H
A
Vomer
13
Q
I
A
Maxilla
14
Q
J
A
Frontal bone
15
Q
K
A
Sphenoid bone
16
Q
L
A
Lacrimal Bone
17
Q
M
A
Ethmoid bone
18
Q
N
A
Middle nasal concha
19
Q
O
A
Infraorbital foramen
20
Q
P
A
Inferior nasal concha
21
Q
Q
A
Anterior nasal spine
22
Q
R
A
Mandible
23
Q
A
A
Frontal bone
24
Q
B
A
Sphenoid bone
25
C
Glabella
26
D
Nasal bone
27
E
Lacrimal bone
28
F
Ethmoid bone
29
G
Anterior Nasal spine (Acanthion)
30
H
Zygomatic bone / Zygoma
31
J
Maxilla
32
K
Mental Foramen
33
L
Mandible
34
M
Bregma
35
N
Coronal suture
36
O
Parietal bone
37
P
Squamosal suture
38
Q
Lambda
39
R
Lambdoidal suture
40
S
occipital bone
41
T
External occipital protuberance / inion
42
U
Mastoid process
43
V
Temporal bone
44
W
External acoustic meatus
45
X
Styloid process
46
A
Frontal bone
47
Floor 3 regions
Anterior Cranial Fossa
Middle Cranial Fossa
Posterior Cranial Fossa
48
Anterior cranial fossa houses
frontal lobes of cerebrum
goes from anterior frontal bone to lesser wings sphenoid
49
Middle cranial fossa houses
temporal lobes
goes from lesser wings of sphenoid to apices of petrous ridges
50
Posterior cranial fossa is
deep depression post to petrous ridges
protects cerebellum, pons and medulla oblongata
51
OML
orbitomeatal line
from outer canthus to EAM
52
IOML
Infraorbitomeatal line
Infraorbitorbital margin to EAM
53
GML
Glabellameatal line
from glabella to EAM
54
IPL
Interpupillary line
perp line between pupils of eyes
55
AML
Acanthiomeatal line
from acanthion to EAM
56
MML
Mentomeatal line
from mental point (center of chin) to EAM
57
There is a - degree between the OML and IOML
7
58
Mesocephalic Skull
petrous pyramids project ant and medially at an angle of 47 degrees
59
Dolichocephalic skull
Long from front to back
narrow from side to side
deep from vertex to base
petrous pyramids angle 40
60
Brachycephalic skull
short from front to back
broad from side to side
shallow from vertex to base
petrous pyramid angle 54
61
Hyposthenic and asthenic patients need support at
chest to elevate c-spine to prevent down tilt of MSP
62
Frontal vertical portion -- forms
Frontal squama, forehead and anterior part of cranial
63
Horizontal portion form
orbital plates
part of roof of nasal cavity
greater part of anterior cranial fossa
64
Frontal sinuses are contained between the
the two tables of squama on each side of MSP
65
Occipital bone situated at
posteroinferior part of cranium
66
occipital bone forms
posterior half of cranial base and greater portion of posterior cranial fossa
67
Occipital bone four parts
◦Squama
◦Two occipital condyles
◦Basilar portion
68
External occipital protuberance is -- corresponds w/
prominent process on squama
internal occipital protuberance
69
External occipital protuberance AKA
Inion
70
Occipital condyles project
anteriorly form anteriorly from each side of squama
71
Occipital condyles articulate w/
two parietals
the two temporals
the sphenoid
the atlas (C1)
72
A
Orbital plate
73
B
Lesser wing
74
C
Greater wing
75
D
Optic groove
76
E
Foramen ovale
77
F
Foramen spinosum
78
G
Temporal
79
H
Petrous portion
80
I
Clivus
81
J
Occipital
82
K
Crista galli
83
L
Cribiform plate
84
M
Optic canal and foramen
85
N
Tuberculum sellae
86
O
Anterior clinoid process
87
P
Sella turcica
88
Q
Posterior clinoid process
89
R
Foramen lacerum
90
S
Dorsum sellae
91
T
Jugular foramen
92
U
Hypoglassal canal
93
V
Foramen magnum
94
Sinuses are - bones of the face
Frontal, ethmoid, sphenoid, maxillary
95
Largest sinuses
Maxilliary
96
Second largest sinus
frontal
97
Many air cells in 3 groups in Ethmoid
anterior, middle and pos
98
Sphenoid sinus located
inferior to the sella tursica
99
Sinuses functions
resonating chamber for voice
decrease of skull air
helps to warm and moisten inhaled air
Shock absorbers
Possibly to control immune system
100
All sinuses must be performed
erect
101
A
Frontal bone
102
B
Frontal sinus
103
C
Crista galli
104
D
Nasal bone
105
E
Ethmoid
106
F
Vomer
107
G
Maxilla
108
H
Parietal
109
I
Sphenoidal sinus
110
J
Pertrous portion
111
K
Internal acoustic meatus
112
L
Occiptal
113
M
Squamous portion of the temporal bone
114
N
Clivus
115
O
Pterygoid hamulus
116
P
Palatine
117
A
Squama
118
B
Foramen magnum
119
C
Basilar portion
120
D
Tympanic portion
121
E
External occipital protuberance (inion)
122
A
B
C
D
Sphenoidal
Maxillary
Frontal
Ethmoidal
123
- degree difference from OML and iOML
7
