Skull, Face, Scalp Flashcards

1
Q

what are the four sutures of the skull

A

coronal
sagittal
squamosal
lambdoidal

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2
Q

what are the 2 intersections on the skull?

A

bregma

lambda

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3
Q

what are the bones of the face

A
nasal
maxilla
zygomatic
mandible
lacrimal
vomer, inferior nasal conchae
palatine bone
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4
Q

whats the general term for bones of the face?

A

viscerocranium

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5
Q

what are the 6 bones of the orbit

A
frontal
zygomatic
maxilla
lacrimal and ethmoid
sphenoid
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6
Q

what are the 5 features of the orbit?

A
supraortibal foramen/notch
optic canal (foramen)
superior ortbital fissure
inferior orbital fissure
lacriminal groove
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7
Q

what is the roof of the nasal cavity

A

nasal bones, frontal sinus, ethmoid, sphenoid sinus

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8
Q

what is the floor and lateral wall of the nasal cavity

A

maxillary bones

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9
Q

what is the floor of the nasal cavity

A

palatine horizontal plate

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10
Q

what is the medial wall of the nasal cavity

A

vomer and perpendicular plate of ethmoid bones

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11
Q

what is another feature of the nasal septum?

A

medial wall

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12
Q

what are the features of the nasal cavity

A

nasal conchae
superior nasal conchae
middle nasal conchae
inferior nasal conchae

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13
Q

what are the 2 features of the maxilla

A

infraorbital foramina

alveolar processes

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14
Q

what are the 2 features of the mandible

A

mental foramen and alveolar processes

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15
Q

what is the anterior cranial fossa hold?

A

frontal lobes

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16
Q

what does the middle cranial fossa hold?

A

temporal lobes

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17
Q

what does the posterior cranial fossa hold?

A

cerebellum and brainstem

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18
Q

what is the paranasal sinus lined with?

A

mucousal membrane

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19
Q

what is the paranasal sinus continous with?

A

nasal cavity

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20
Q

what does the paranasal sinus do for bones?

A

make bones lighter

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21
Q

what does the paranasal sinus add to voice?

A

resonance

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22
Q

what are the paranasal sinuses?

A

frontal sinuses
ethmoid air cells
sphenoid sinuses
maxillary sinuses

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23
Q

what is important about the foramina of the skull?

A

allow vessels and cranial nn to exit cranial vault

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24
Q

what are the layers of the SCALP?

A
skin
connective tissue (dense)
aponeurotic layer
loose connective tissue
pericranium
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25
where would scalp lacerations happen and what could the outcome be?
Happen in the Connective tissue layer | outcome: bleed to death
26
why do infections spread easy in the loose areolar tissue?
spread easy travel into cranial cavity (through emissary veins) to meniges -fluid can move into eyelids and root of nose
27
what do the 3 auricularis mm do?
protract, elevate, and retract ears
28
what muscle moves the scalp back and forth?
occipitofrontalis m
29
what are the 3 things that make the occipitofrontalis m?
occipitalis m galea aponeurotica frontalis m
30
what is the action for the frontalis muscle?
elevates eyebrows, wrinkles skin of forehead, protracts scalp
31
what does the occipitalis muscle do?
retracts scalp, increasing effectiveness of frontal belly
32
what does the anterior auricularis muscle do?
protract ear
33
what does the superior auricularis muscle do?
elevate ear
34
what does the posterior auricularis muscle do?
retract ear
35
what nerve innervates muscles of facial expression?
facial nerve
36
what are the 3 muscles of the eye region?
frontalis m corrugator supercilii m orbicularis oculi m
37
action of frontalis m?
raises eyebrow (surprise)
38
action of corrugator supercilii m?
draws eyebrow in (frowning)
39
action of orbicularis oculi m?
closes eye (winking)
40
what are the 3 muscles of the nasal region
procerus m nasalis m levator labii superioris alaeque nasi m
41
action of procerus m?
wrinkles bridge of nose
42
action of nasalis m?
compresses and dilates nostri;
43
action of levator labii superioris alaeque nasi m?
dilates nostril
44
what are the 6 superficial muscles of the mouth region
``` orbicularis oris levator labii superioris zygomaticus major/minor depressor anguli oris risorius mentalis ```
45
action of orbicularis oris?
closes mouth
46
action of levator labii superioris?
elevates upper lip
47
action of zygomaticus major/minor?
draws mouth up
48
action of depressor anguli oris?
depresses angle of mouth
49
action of risorius?
retracts the corner of the mouth
50
action of mentalis?
protrudes lower lip
51
what are the 3 deep muscles of the mouth region?
buccinator levator anguli oris depressor labii inferioris
52
action of buccinator?
compresses cheek and assists with mastication
53
action of levator anguli oris?
elevates angle of mouth
54
action of depressor labii inferioris?
depresses lower lip
55
what are the 4 muscles of mastication?
temporalis massester medial pterygoid lateral pterygoid
56
action of temporalis?
elevates and retracts mandible
57
action of masster?
elevates and clenches mandible
58
action of med. pterygoid?
elevates, protrudes, and rotates mandible
59
action of lateral pterygoid?
protrudes and rotates mandible; opens mouth
60
what does the trigeminal nerve innervate?
sensory to the face and scalp
61
what does the cervical n innervate
sensory to the back of head, ears, and jaw
62
what does the facial nerve innervate?
motor to the mm of facial expression
63
what does the mandibular (CN V3) innervate?
motor to mm of mastication
64
what is CN V1 division?
ophthalmic
65
what are the 5 nerves of the sensory innervation of CN V1 division?
``` supraorbital n supratrochlear n infratrochlear n external nasal n lacrimal n ```
66
what is the CN V2 division?
maxillary division
67
what are the 3 nerves of sensory innervationof CN V2 division?
zygomaticotemporal n zygomaticofacial n infraorbital n
68
what is the CN V3 division?
mandibular
69
what are the 3 sensory innervations for CN V3 division
auriculotemporal n buccal n mental n
70
what does parotid duct transmit?
saliva from gland
71
where does it come out in the oral cavity?
parotid papilla
72
what is calculus formation associated with?
chronic parotiditis
73
what happens with salivary fistulas?
duct ligation
74
what is Frey's syndrome?
gustatory sweating
75
what nerve runs through parotid gland?
facial n
76
what can happen if you damage facial nerve?
paralysis of facial mm on affected ide
77
what nerve is in danger duing a parotidectomy?
facial n
78
what does facial nerve innervate
facial expression muscles
79
what does the facial nerve exit?
stylomastoid foramen
80
what does the facial nerve bifuricate into?
superior temprofacial branch | inferior cervicofacial branch
81
what are the branches of the facial nerve
``` temporal zygomatic buccal marginal mandibular cervical posterior auricular ```
82
what is the most common cause of facial paralysis
bell's palsy
83
what nerve is associated with bell's palsy
facial nerve
84
what is the action of buccal fat pad?
provides protection for parotid duct and CN VII
85
what branch of the facial nerve is associated with buccinator m
buccal branch of facial nerve
86
buccal branch from facial nerve is motor or sensory?
motor
87
what is the branch of the trigeminal n for buccinator m
buccal branch
88
buccal branch from trigeminal n (CN V3) is sensory or motor?
sensory
89
what is the superficial temporal artery a branch of?
external carotid a
90
where does the superficial temporal vein drain to?
retromandibular vein
91
what does the superficial temporal artery & vein run with?
auriculotemporal nerve
92
what does the transverse facial artery and vein supply?
blood to upper cheek region (parotid gland, duct, and masseter m)
93
what are the branches of the superficial temporal vessels?
transverse facial artery & vein