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PNS > Exam 1: Facial N > Flashcards

Exam 1: Facial N Flashcards

1
Q

Facial nerve carries both ___ and ___

A

Motor and sensory

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2
Q

Nickname of CN7

A

Nerve of facial expression

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3
Q

CN 7 is mostly

A

Motor

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4
Q

Special sensory carried in CN7

A

Taste

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5
Q

Primary nucleus of origin for CN7

A

Motor nucleus of facial N

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6
Q

All nuclei of origin are

A

LMN

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7
Q

____ contributes preganglionic parasympathetic fibers to facial nerve

A

Superior salivary nucleus

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8
Q

Sensory fibers carried in facial N terminate in

A

Upper part of solitary nucleus

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9
Q

Cell bodies of first order sensory neurons found in

A

Geniculate ganglion

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10
Q

General sensory from ___ and ____ carried in geniculate ganglion to solitary nucleus

A

External ear

Lateral tympanic membrane

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11
Q

Taste information carried from ant part of tongue carried in

A

Chorda tympani

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12
Q

Motor nucleus of facial nerve receive info from

A

Both cerebral hemispheres

Reticular formation

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13
Q

Part of motor nucleus that supplies muscle in inferior part of face comes from

A

Contralateral cortex

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14
Q

Preganglionic parasympathetic fibers synapse in either

A

Pterygopalatine ganglion

Submandibular ganglion

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15
Q

Postganglionic parasympathetic fibers supply lacrimal gland, _____, and glands in oral and nasal cavities

A

Submandibular and sublingual glands

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16
Q

AO of facial N

A

Medullopontine sulcus

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17
Q

Before exiting CNS, fibers from motor nucleus travel ____ and arch around ____

A

Posteriorly

Abducens nuclei

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18
Q

Geniculate ganglion located in

A

External genu of facial nerve

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19
Q

Greater petrosal nerve re-enters temporal bone through

A

Foramen lacerum

20
Q

Greater petrosal N joins

A

Pterygopalatine ganglion

21
Q

Greater petrosal N carries PSNS fibers that will stimulate secretions from

A

Lacrimal gland
Nasal gland
Palatial glands

22
Q

Greater petrosal N aka

A

Superficial petrosal N

23
Q

2nd Nerve given off inside facial canal

A

Nerve to stapedius

24
Q

Only nerve to contain only motor fibers that leave facial N in facial canal

A

Nerve to stapedius

25
Q

Smallest muscle

A

Stapedius

26
Q

3rd branch coming off facial N in facial canal

A

Chorda tympani

27
Q

Chorda tympani leaves temporal bone via

A

Pterygotympanic fissure

28
Q

Chorda tympani combines with ___

A

Lingual N (mandibular division, trigeminal)

29
Q

All preganglionic parasympathetic fibers given off before exiting

A

Stylomastoid foramen

30
Q

Chorda tympani carries

A

Preganglionic parasympathetic fibers

Taste information

31
Q

After exiting stylomastoid foramen, only ___ and __ fibers are carried

A

Motor

General sense

32
Q

Three branches of facial nerve btw stylomastoid foramen and parotid gland

A

Digastric branch
Stylohyoid branch
Posterior auricular N

33
Q

Digastric branch supplies

A

Posterior belly of digastric muscle

34
Q

Stylohyoid branch supplies

A

Stylohyoid muscle

35
Q

Posterior auricular N divides into

A

Occipital and auricular branches

36
Q

Occipital branch supplies

A

Occipitalis belly of occipitofrontalis

37
Q

Auricular branch supplies

A

Posterior auricular muscle

38
Q

Once the nerve enters the parotid gland it becomes

A

Parotid plexus

39
Q

Parotid plexus gives rise to two trunks

A

Temporofacial

Cervicofacial

40
Q

Two trunks then give rise to these 5 major branches

A 
Temporal
Zygomatic
Buccal
Marginal mandibular
Cervical
41
Q

Temporal branches supply

A

Intrinsic auricular

Superior and anterior auricular muscles

42
Q

Temporal branches w/ zygomaticotemporal N and auriculotemporal N supply

A

Orbicularis oculi
Corrugator supercilii
Frontal belly/epicranius

43
Q

Zygomatic branches supply

A

Orbicularis oculi

44
Q

Buccal branches supply

A

Buccinator
Orbicularis oris
Levator anguli oris

45
Q

Marginal mandibular branch supplies

A

Risorius

Muscles of chin and lower lip

46
Q

Cervical branch travels inferiorly to supply

A

Platysma

47
Q

Bell’s palsy is usually

A

Unilateral and temporary

PNS (24 decks)

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