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Anatomy II > Exam 3: Skull lecture iii > Flashcards

Exam 3: Skull lecture iii Flashcards

1
Q

orbicularis oris: origin

A

from maxilla and mandible

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2
Q

orbicularis oris: insertion

A

to mucous membrane of lips

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3
Q

orbicularis oris: action

A

closes oral fissure (space btwn lips) and aids in puckering lips

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4
Q

orbicularis ori: innervation

A

facial nerve

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5
Q

buccinator: origin

A

from mandible, maxilla, and pterygomandibular raphe

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6
Q

buccinator: insertion

A

to angle of mouth

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7
Q

buccinator: action

A

compresses cheeks during blowing and puckering (press cheeks against molar teeth) and help keep food in place during chewing

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8
Q

zygomaticus major: origin

A

from zygomatic arch

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9
Q

zygomaticus major: insertion

A

to angle of mouth

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10
Q

zygomaticus major: action

A

elevate labial commissure (jxn of upper and lower lips); bilateral contraction causes smile; unilateral contraction causes sneer

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11
Q

muscles of scalp/facial expression are all innervated by:

A

the facial nerve

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12
Q

levator labii superioris: origin

A

from maxilla

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13
Q

levator labii superioris: insertion

A

to skin of upper lip

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14
Q

levator labii superioris: action

A

elevate upper lip

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15
Q

depressor labii inferioris: origin

A

From mandible

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16
Q

depressor labii inferioris: insertion

A

to skin of lower lip

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17
Q

depressor labii inferioris: action

A

depress lower lip

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18
Q

depressor anguli oris: origin

A

from mandible

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19
Q

depressor anguli oris: insertion

A

to angle of mouth

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20
Q

depressor anguli oris: action

A

depress labial commissure

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21
Q

platysma: origin

A

from subcutaneous tissue around the clavicle

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22
Q

platysma: insertion

A

to mandible, skin of cheek, and angle of mouth

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23
Q

platysma: action

A

depress mandible; tense skin of inferior face and neck

24
Q

nerves of face and scalp: facial nerve (CN VII): its 5 terminal branches are the _; these supply the muscles of facial expression

A

temporal, zygomatic, buccal, marginal mandibular, and cervical nerves

25
Q

bell palsy: results from injury to the

A

facial nerve or its branches

26
Q

bell palsy: the nerve injury produces paralysis of some or all _ on the the affected side

A

facial muscles

27
Q

bell palsy: symptoms include

A

distorted facial expression, inadequate lubrication of corena, problems eating and whistling, tears and saliva running from drooping eye and mouth, etc

28
Q

trigeminal nerve (CN V): its 3 divisions provide most of the _ innervation of the face and _ scalp

A

cutaneous (sensory); anterior scalp

29
Q

trigeminal nerve (CN V): CN V is largely _, but also has a _ portion that supplies the chewing/mastication muscles

A

largely sensory but motor portion

30
Q

trigeminal nerve (CN V): most of the neurons providing its sensory fibers that enter the CNS have cell bodies in the _

A

trigeminal ganglion (which is thus a sensory ganglion)

31
Q

ophthalmic nerve (CN V1): one of the 3 main divisions of the _ nerve

A

trigeminal nerve

32
Q

ophthalmic nerve (CN V1): exits cranium via _ fissure

A

superior orbital fissure

33
Q

ophthalmic nerve (CN V1): trifurcates into the _, _, and _ nerves

A

frontal, nasociliary, and lacrimal nerves

34
Q

ophthalmic nerve (CN V1): mostly supplies skin of scalp and face superior to _ and medial to _

A

superior to lower eyelid and medial to lateral corner of eye

35
Q

ophthalmic nerve (CN V1): the ophthalmic nerve also supplies the eyeball, part of the _ and the _ gland

A

part of the nose and the lacrimal gland

36
Q

maxillary nerve (CN V2): one of the 3 main divisions of the _ nerve

A

trigeminal nerve

37
Q

maxillary nerve (CN V2): exits cranium via _, travels a bit, and enters orbit via _

A

foramen rotundum; inferior orbital fissure

38
Q

maxillary nerve (CN V2): gives rise to _ and _ nerves

A

zygomatic nerve and infra-orbital nerve

39
Q

maxillary nerve (CN V2): mostly supplies skin from bottom of _ down to _

A

bottom of upper eyelid down to labial commissure

40
Q

maxillary nerve (CN V2): the maxillary nerve also supplies skin of a bit of the _ scalp, and most of the _

A

lateral scalp and most of the upper teeth

41
Q

mandibular nerve (CN V3): one of the 3 main branches of the _ nerve

A

trigeminal nerve

42
Q

mandibular nerve (CN V3): exits the cranium via

A

foramen ovale

43
Q

mandibular nerve (CN V3): gives rise to _, _, and _ nerves

A

auriculotemporal, buccal, and mental nerves

44
Q

mandibular nerve (CN V3): mostly supplies skin inferior to _ and part of skin of cheek and _

A

skin inferior to labial commissure and part of skin of cheek and ear

45
Q

mandibular nerve (CN V3): the mandibular nerve also supplies the _ teeth, and contains _ fibers that supply chewing muscles

A

lower teeth, motor fibers that supply chewing muscles (masseter, temporalis, medial pterygoid, and lateral pterygoid)

46
Q

trigeminal nerve (CN V): each division of the trigeminal nerve supplies a distinct _ zone, similar to a dermatome, but w/o the overlapping of _ nerves; therefore, injures result in _ areas of paresthesia

A

sensory zone, adjacent nerves, distinct and defined areas of paresthesia

47
Q

trigeminal nerve (CN V): the divisions of CN V supply sensation not only to the superficial skin of the face but also to _ surfaces of the cornea, nasal cavity, oral cavity, paranasal sinuses, etc

A

deep mucosal surfaces

48
Q

trigeminal neuralgia (tic douloureux): a sensory disorder of the _

A

sensory disorder of the sensory portion of CN V

49
Q

trigeminal neuralgia (tic douloureux): characterized by

A

sudden attacks of excruciating jabs of facial pain

50
Q

trigeminal neuralgia (tic douloureux): _ is most frequently involved (think nerve)

A

CN V2

51
Q

trigeminal neuralgia (tic douloureux): may be caused by _

A

demyelination of CN V sensory axons

52
Q

superficial vasculature of face and scalp: the face is richly supplied w/ _ arteries and veins. the terminal branches of both arteries and veins anastomose freely, including across the _ w/ contralateral partners

A

superficial arteries and veins; midline

53
Q

superficial vasculature of face and scalp: external carotid artery: most _ arteries of the face are branches of it; one of these branches, the _ artery, provide the main arterial supply to the face

A

superficial arteries, facial artery

54
Q

superficial vasculature of face and scalp: internal carotid artery: gives rise to a couple of _ arteries

A

forehead

55
Q

CN V1 =

A

Ophthalmic nerve

56
Q

CN V2=

A

Maxillary nerve

57
Q

CN V3=

A

Mandibular nerve

Anatomy II (28 decks)

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