Skull Flashcards
0
Q
Coronal suture
A
Between frontal and parietal
1
Q
Name the cranial bones.
A
Frontal Ethmoid Parietal (2) Occipital Temporal (2) Sphenoid
2
Q
Saggital suture
A
Between parietal bones
3
Q
Squamous suture
A
Between parietal and temporal bones
4
Q
Lambdoid suture
A
Between parietal and occipital bones
5
Q
Anterior fontanelle
A
Coronal and saggital sutures
6
Q
Posterior fontanelle
A
Junction of sagittal and lambdoid sutures
7
Q
Sphenoidal/anteriolateral fontanelle
A
Junction of squamous and coronal sutures
8
Q
Mastoid/posteriolateral fontanelle
A
Between squamous and lambdoid sutures
9
Q
Glabella
A
Frontal bone.
Midline above brow
Muscle attachment.
10
Q
Frontal sinus
A
Frontal bone
Deep to glabella
Mucous production
11
Q
Supracilary/supraorbital ridge/margin/arch
A
Frontal brow
Eyebrow ridge
Muscle attachment
12
Q
Supraorbital notch/foramen
A
Frontal bone
On browline, medial 1/2
Passageway for trigemal nerve
13
Q
Supratrochlear foramen
A
Frontal bone.
Not a hole (sigh)
Medial to supraorbital foramen and lateral to nasal bones.
Passageway for nerves and blood vessels.
14
Q
Frontal squamous
A
Flat portion of frontal bone.
Toward coronal suture
15
Q
Frontal tuberosity/eminence
A
Frontal bone
Forehead, above supercilary ridge, below squamous
16
Q
Superior/inferior temporal lines
A
Muscle attachment (superior: galea aponeuroses and muscle attachment; inferior: temporalis muscle attachment)
17
Q
Orbital surface of frontal bone
A
Superior aspect of eye socket
18
Q
Frontal crest
A
Interior surface, anterior
Dura attachment; anchors brain within cranial cavity
19
Q
Groove for superior sagittal sinus
A
Interior surface, running antpost
20
Q
How many bones does the ethmoid bone suture with?
A
Six (frontal, nasal, inferior nasal concha, maxilla, vomer, sphenoid)
21
Q
Crista galli
A
Ethmoid bone
Vertical, superior to cribiform plate
Anchor point for dura matter
22
Q
Cribiform plate
A
Ethmoid bone
Contains olfactory foramina for olfactory nerve bundles
23
Q
Perpendicular plate
A
Ethmoid
Anterior part of bone. Inferior to cribiform plate, above vomer
24
Septum
Perpendicular plate (ethmoid) + vomer
25
Nasal conchae
Ethmoid
Either side of perpendicular plate
Helps with filtration
Only the middle concha is visible from frontal view.
26
Basilar part/basiocciput
Base of occipital bone.
Muscle attachment
Sutures with sphenoid
27
Clivus
Juncture of sphenoid and occiput
Anterior to foramen magnum
Cradles pons and medulla
28
Groove for occipital sinus
Occipital bone
Midline and posterior to foramen magnum
Connects foramen magnum to IOP
29
Groove for transverse sinus
Occipital bone
Lateral and inferior to saggital sinus
Curves and connects groove for superior sagittal sinus to groove for sigmoid sinus.
30
Groove for superior sagittal sinus (occipital)
Midline and superior to occipital sinus. Right behind IOP.
31
Groove for inferior petrosal sinus
Occipital bone
| Below temporal bone. Lateral to clivus and anterior to jugular foramen
32
Groove for sigmoid sinus
Occipital bone
Lateral to foramen magnum
Continuous with groove for transverse sinus. In between that and jugular foramen.
33
Jugular foramen
Occipital bone (can also connect to temporal bone)
Passageway for inferior petrosal sinus, sigmoid sinus, arteries and nerves
Between occiput and temporal bones
34
Hypoglossal canal
Occipital bone
Passageway for hypoglossal nerve
Inferior aspect of skull. Lateral-anterior to occipital condyle.
35
Foramen magnum
Passageway for medulla oblongata, meninges, arteries and nerves
36
Superior nuchal line
Inferior aspect of occipital bone.
Most posterior of the two, coming iff inion
Muscle attachment
37
Inferior nuchal line
Inferior aspect of occipital bone.
Closest to foramen magnum
Muscle attachment
38
Plenum nuchae
Occipital bone
Flat area at base of head
Between inferior and superior nuchal lines
Muscle attachment
39
Occipital condyles
Atlantooccipital joint surface
| Either side of foramen magnum
40
Occipital squamous
The curved, expanded plate behind foramen magnum
| Contacts parietal and temporal bones
41
External occipital crest
Travels from EOP to foramen magnum
| Attachment of nuchal ligament
42
Internal occipital crest
Attachment for falx cerebelli (dura matter)
| V shaped, anterior to IOP
43
Occipital protuberance
External: inion
Internal
At midline of occiput
44
External auditory or acoustic meatus
Temporal Bone
| How sound makes its way to eardrum
45
Internal auditory meatus
Internal temporal
| How sound gets in
46
Mastoid process
Temporal bone
Muscle attachment
Across the divide from mandible
47
Styloid process of the temporal bone
Muscle attachment
| Inferior to mandibular fossa and external auditory meatus
48
Squamous portion of temporal bone
Flat portion
Most anterior 1/3
Superior to zygomatic process
49
Petrous portion
Middle 1/3 of temporal bone
| Thickest portion of bone
50
Mastoid portion
Only external portion of temporal bone
Posterior 1/3
Near mastoid process
51
Zygomatic process
Temporal bone
| Part of zygomatic arch
52
What makes up the zygomatic arch?
Zygomatic process (temporal bone) and temporal process (zygomatic)
53
Articular tubercle
Temporal bone
| On zygomatic process
54
Temporal fossa
Bounded by superior temporal line and terminating at zygomatic arch
55
Mandibular fossa
Shallow depression. Joint surface for TMJ
56
Groove for superior petrosal sinus
Temporal bone
Above occiput and inferior petrosal sinus
Superior to internal auditory meatus
57
Groove for middle temporal artery
Roughly at the border of squamous and petrosal portions.
58
Greater wings
Sphenoid
| Found at temples
59
Lesser wings
Sphenoid
| Defines boundary between anterior and middle cranial fossa
60
Infratemporal crest
Sphenoid bone
| Deep to zygomatic arch, lateral to sphenopalentine foramen
61
Pterygoid processes
Sphenoid
Medial plate -- hamulus
Lateral plate
Muscle attachment
62
Chiasmatic groove
Sphenoid
| Where optic nerves cross over
63
Sella turcica
Sphenoid (temporal?)
| Holds the pituitary gland and grooves for internal carotid
64
Jugum
Behind cribiform plate,ethmo-sphenoid suture
65
Superior orbital fissure
Sphenoid
| From anterior view, lateral to optic canal for nerve and vein passageway
66
Inferior orbital fissure
Sphenoid
| Between sphenoid and maxilla
67
Optic canal/foramen
Sphenoid
| For optic nerve and ophthalmic artery
68
Sphenoid sinus
Below sella turca
| Seen sagittally
69
Foramen rotundum
Sphenoid
Maxillary nerve
10:00
70
Foramen ovale
Sphenoid
Mandibular nerve, meningeal artery, sometimes lesser petrosal nerve
9:00
71
Foramen lacerum
Sphenoid
Internal carotid artery and internal carotid nerve plexus
8:00
72
Foramen spinosum
Sphenoid
Middle meningeal artery and vein, mandibular nerve
Just lateral/posterior to foramen ovale
73
Name the Sphenoid foramen
```
Rotundum (n)
Ovale (an)
Lacerum (an)
Spinosum (van)
(Round Oval Little Spots)
```
74
What are the three bones on the side of the nose?
Nasal
Maxilla
Lacrimal
75
Name the facial bones
```
Nasal (2)
Palatine (2)
Lacrimal (2)
Vomer
Mandible
Maxilla (2)
Inferior nasal conchae (2)
Zygomatic (2)
```
76
Nasion
Small opening between nasal and frontal bones
77
Palatine
Forms the hard palate
| Posterior to inferior nasal conchae and anterior 2/3 hard palate
78
Horizontal plate of the palatine
Posterior 1/3 of hard palate
79
Posterior nasal spine
Palatine
Tip of bone far back in throat
Posterior end of the horizontal plate
80
Perpendicular plate (palatine)
Makes of part of nasal cavity
| Posterior to inferior nasal conchae
81
Orbital surface of lacrimal
Inside corner of eye socket
82
Lacrimal canal and fossa
Dispenses and drains tears
83
Vomer
Bottom part of septum
84
Frontal process of the maxilla
Where maxilla meets frontal bones
| In between lacrimal and nasal bones
85
Zygomatic process of the maxilla
Where the maxilla meets the zygomatic bone
86
Alveolar process
Maxilla
| Where maxilla meets with teeth.
87
Canine eminence
Maxilla
| Bump above the canine teeth
88
Canine fossa
Inferior to infraorbital foramen
| Lateral to nasal opening
89
Incisive fossa
In between the 4 incisor teeth (3)
90
Infraorbital foramen
Maxilla
Hole under orbit of each eye
Passageway for trigeminal nerve
91
Where does the trigeminal nerve pass through?
Mental foramen
Infraorbital foramen
Supraorbital foramen
92
Nasal notch
Maxilla
Anterior, deep concavity
The "nose hole"
93
Anterior nasal spine
Maxilla
| Below vomer. Behind the notch of skin under the nose.
94
Orbiatal surface/plate (maxilla)
Medial floor of orbital socket
95
Inferior orbital fissure
Maxilla
Passageway for nerve and blood vessels
Medial to infraorbital groove
Posteriory separate lateral wall and floor of orbit
96
Maxillary sinuses
Air filled sacs
| Deep to the apples of cheeks
97
Palestine process
Maxilla
| Anterior portion of hard palate
98
Incisive canal
Maxilla.
Anterior hard palate, right behind front teeth
Passageway for greater palatine nerve
99
(Internal) incisive foramen/fossa
Maxilla
Opening to incisive canal
On roof of mouth behind front teeth
100
Inferior nasal conchae
Sutures with palatine and maxilla
101
Zygomatic
Cheek bone
102
Zygomatic arch
Temporal process of zygomatic bone + zygomatic process of temporal bone
103
Frontal process (zygomatic)
Meets with frontal bone
104
Maxillary process (zygomatic)
Meets with maxilla
105
Temporal process (zygomatic)
Meets with temporal bone.
| Forms part of zygomatic arch
106
Orbital surface
Lateral surface of orbit.
107
Ramus of mandible
Vertical (posterior) surface
108
Mandibular foramen
Inside jaw for nerve entrance.
109
Mylohyloid groove
Mandible
For nerve and artery passage
Interior. Runs distal from mandibular foramen
110
Lingula
Mandible
Medial to mandibular foramen
Ligament attachment
111
Angle (mandible)
Where body and Ramus meet
112
Condylar process (mandible)
Top of Ramus. Posterior. Thick.
Head of condylar: articular surface for TMJ
Neck. Below head
113
Pterygoid fossa
Mandible
Muscle attachment.
Interior aspect, just below condylar head.
114
Coronoid process (mandible)
Muscle attachment
| Pointy bit on anterior side of mandibular notch. Across form condylar
115
Mandibular notch
In between condylar and coronoid processes
116
Oblique line (mandible)
Muscle attachment
| From mental foramen to just behind molars
117
Mental foramen
Mandible
Lateral to mental tubercle
Passage for trigeminal nerve
118
Alveolar processes (mandible)
Bumps of bone that help hold teeth on place.
119
Submandibular fossa
Internal
Inferior to sublingual fossa
For submandibular salivary glands
120
Sublingual fossa
Mandible
| For sublingual gland
121
Digastric fossa
Mandible
Muscle attachment
Inferior to mental spine
122
Genial/mental spine
Mandible
Muscle attachment
Internal, centre of jaw. Little bumps.
123
Mylohyloid line
Mandible
Muscle attachment
Internal. Inferior to sublingual fossa
124
Mental tubercles
Mandible
| External; lateral to mental protuberance. Muscle attachment
125
Mental protuberance
Mandible. Centre of chin
