The Skull Flashcards

1
Q

Two components of the skull

A
  1. Facial Skeleton (Viscerocranium)

2. Cranial Vault (Neurocranium)

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2
Q

How many bones in the facial component

A

14

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3
Q

How many bones in the cranial component

A

8

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4
Q
A

Frontal Bone

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5
Q
A

Parietal Bone

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6
Q
A

Orbit

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7
Q
A

Lacrimal

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8
Q
A

Temporal

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9
Q
A

Mandible

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10
Q
A

Maxilla

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11
Q
A

Zygomatic Bone

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12
Q
A

Nasal bones

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13
Q

Which bones cannot be seen from a frontal view?

A

the occipital bone and the palatine bones

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14
Q

Only bone not directly attached to the skull

A

the mandible

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15
Q

How many teeth do the maxilla and mandbile contain?

A

16 each

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16
Q

The maxilla and mandible each feature an ____________ which contains the teeth

A

alveolar process

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17
Q
A

Superior orbital notch (or foramen)

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18
Q
A

Inferior orbital foramen

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19
Q
A

Mental foramen

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20
Q

What do foramina allow?

A

the passage of nerves

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21
Q
A

Sphenoid

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22
Q
A

Nasal

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23
Q
A

Orbit

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24
Q
A

Maxilla

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25
Q
A

Mandible

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26
Q
A

Styloid process

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27
Q
A

Mastoid process

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28
Q
A

Occipital

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29
Q
A

Frontal

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30
Q
A

Parietal

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31
Q
A

Temporal

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32
Q
A

Zygoma

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33
Q

The zygomatic arch is made up of:

A

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

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34
Q

What part of the sphenoid bone do we see in the lateral view?

A

The greater wing (above the zygomatic arch) and the lateral pterygoid plate (below the zygomatic arch)

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35
Q

What are the sections of the temporal bone? (2)

A
  1. The squamous (flat) section above

2. The petrous (not flat) section below

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36
Q

What makes up the temporal fossa? (3)

A

The squamous temporal bone with the greater wing of the sphenoid bone and the lower portion of the parietal bone make up the depression

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37
Q

What is the name of the ‘ear hole’ on the temporal bone?

A

The external acoustic meatus

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38
Q

Coronal suture

A

Where the frontal bone joins the parietal bone

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39
Q

Lambdoid suture

A

Where the parietal bone is united with the occipotal bone

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40
Q

Pterion

A

The area where the parietal, frontal, sphenoid and temporal bones join

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41
Q

Saggital suture

A

Where the paired parietal bones unite

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42
Q

Superior nuchal line

A

a feature of the occipital bone for muscle attachement

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43
Q

Occipital condyles articulate with

A

the atlas at the atlanto-occipital joint

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44
Q

Foramen magnum

A
  • Located between the condyles

- Spinal cord passes through it

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45
Q

3 main sutures of the cranium

A
  1. Coronal
  2. Sagittal
  3. Lambdoid
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46
Q
A

Coronal Suture

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47
Q
A

Sagittal Suture

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48
Q
A

Lambdoid Suture

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49
Q
A

Occipital Bone

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50
Q
A

Frontal Bone

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51
Q
A

Parietal Bone

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52
Q
A

Parietal Bone

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53
Q
A

Nasal choanae

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54
Q
A

Vomer Bone

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55
Q
A

Hard palate

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56
Q
A

Palatine bones

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57
Q
A

Palatine Process of the Maxilla

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58
Q
A

Pterygoid Plates

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59
Q
A

Medial pterygoid plate

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60
Q
A

Lateral pterygoid plate

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61
Q
A

Inferior orbital fissure

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62
Q
A

Foramina ovale

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63
Q
A

Foramina spinosum

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64
Q
A

Occipital condyles

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65
Q
A

Styloid process

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66
Q
A

Mastoid process

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67
Q
A

Zygomatic arch

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68
Q
A

Temporal process of the zygomatic bone

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69
Q
A

Zygomatic process of the temporal bone

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70
Q
A

Carotid Canal

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71
Q
A

Stylomastoid Foramen

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72
Q
A

Foramen Magnum

73
Q
A

Jugular Foramen

74
Q
A

External Acoustic Meatus

75
Q
A

Foramen Lacerum

76
Q
A

Incisive Foramen

77
Q
A

Optic Canal

78
Q
A

Superior Orbital Fissure

79
Q
A

Foramina Rotundum

80
Q
A

Foramen Ovale

81
Q
A

Foramina Spinosum

82
Q
A

Foramina Lacerum

83
Q
A

Internal Acoustic Meatus

84
Q
A

Jugular Foramen

85
Q
A

Hypoglossal Canal

86
Q
A

Foramen Magnum

87
Q
A

Jugum of the Sphenoid Bone

88
Q
A

Lesser Wing of the Sphenoid Bone

89
Q
A

Anterior Clinoid Processes

90
Q
A

Greater Wing of the Sphenoid Bone

91
Q
A

Sella Turcica

92
Q
A

Posterior Clinoid Process

93
Q
A

Occipital Bone

94
Q
A

Clivus

95
Q
A

Temporal bone

96
Q
A

Parietal Bone

97
Q
A

Frontal Bone

98
Q
A

Crista Gali of Ethmoid Bone

99
Q
A

Cribriform Plate of the Ethmoid Bone

100
Q

Characteristics of the frontal bone (6)

A
  • Vertical plate
  • The forehead
  • Horizontal plate
  • Roof of the orbit (floor of the anterior cranial fossa)
  • Frontal sinuses
  • Supraorbital notch
101
Q
A

Frontal Bone (internal view)

102
Q
A

Cribriform plate

103
Q
A

Crista galli (ethmoid bone)

104
Q
A

Floor of anterior cranial fossa (Roof of orbit)

105
Q

Characteristics of the parietal bones (5)

A
  • united by the saggital suture
  • form walls and roof of the cranium
  • articulate with the frontal bone at the coronal suture
  • articulate with the sphenoid and occipital bone at the lambdoid suture
  • articulate with the temporal bone at the squamous suture
106
Q

Characteristics of the occipital bone (4)

A
  • forms the back and the posterior portion of the base of the skull
  • foramen magnum
  • hypoglossal canals
  • occipital condyles
107
Q
A

Sphenoid bone (anterior view)

108
Q
A

Lesser wing

109
Q
A

Sphenoid sinus

110
Q
A

Superior orbital fissure

111
Q
A

Greater wing

112
Q
A

Pterygoid canal

113
Q
A

Pterygoid process

114
Q
A

Medial plate

115
Q
A

Lateral plate

116
Q
A

Foramen rotundum

117
Q
A

Orbital surface of greater wing

118
Q
A

Sphenoid bone (superior view)

119
Q
A

Superior orbital fissure

120
Q
A

Anterior clinoid process

121
Q
A

Optic groove

122
Q
A

Optic canal

123
Q
A

Lesser wing

124
Q
A

Greater wing

125
Q
A

Sphenoidal spine

126
Q
A

Posterior clinoid process

127
Q
A

Sella turcica

128
Q
A

Foramen spinosum

129
Q
A

Foramen ovale

130
Q
A

Foramen rotundum

131
Q
A

Tuberculum sellae

132
Q
A

Cribiform plate

133
Q
A

Crista galli

134
Q
A

Superior concha

135
Q
A

Middle concha

136
Q
A

Perpendicular plate

137
Q
A

Crista galli

138
Q
A

Cribiform plate

139
Q
A

Nasal septum

140
Q
A

Inferior concha

141
Q
A

Middle concha

142
Q
A

Superior concha

143
Q
A

Air cells

144
Q
A

Inferior concha

145
Q
A

Maxillary sinus

146
Q
A

Frontal process

147
Q
A

Palatine process of maxilla

148
Q
A

Superior alveolar process

149
Q
A

Maxillary bone

150
Q
A

Horizontal process of palatine

151
Q
A

Palatine bone

152
Q
A

Maxilla (Above: medial view; Below: anterior view)

153
Q
A

Palatine shelf

154
Q
A

Sinus

155
Q
A

Infraorbital foramen

156
Q
A

Nasal bone

157
Q
A

Mandible

158
Q
A

Coronoid process

159
Q
A

Articular process

160
Q
A

Ramus

161
Q
A

Angle

162
Q
A

Body

163
Q
A

Mandibular foramen

164
Q
A

Palatine bones (anterior view)

165
Q
A

Vertical plate of ethmoid

166
Q
A

Nasal chamber

167
Q
A

Horizontal plate

168
Q
A

Vertical plate of palatine bones

169
Q
A

Vomer

170
Q
A

Hyoid bone (anterior view)

171
Q
A

Body

172
Q
A

Lesser Cornu (horns)

173
Q
A

Greater Cornu (horns)

174
Q

What are zygomatic bones?

A
  • Cheek bones
  • Has frontal, maxillary, and temporal processes
  • Contributes to the wall and lateral border of the orbit and the later half of the inferior border and floor of the orbit
175
Q

What is the lacrimal bone

A
  • small bone located on the medial wall of the orbit
  • partially forms the opening of the nasolacrimal canal
  • contributes to the lateral nasal wall
176
Q

What are nasal bones?

A
  • two small bones that form the bridge of the nose
177
Q

What is the hyoid bone?

A
  • hangs below the floor of the mouth
  • supported by various muscles
  • the larynx is suspended from it
178
Q
A

Hyoid bone