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LECOM MS1 Gross Anatomy - Head/Neck 2022 (+Shelf) > Cranial Nerves Fundamentals > Flashcards

Cranial Nerves Fundamentals Flashcards

1
Q

Cranial nerve sensory ganglia?

A

TGIS9+10: Trigeminal (CN V), Geniculate (CN VII), Inferior and Superior ganglia (of CN IX, X)

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2
Q

Cranial nerve motor (i.e. parasympathetic) ganglia?

A

COPS: Ciliary (CN III), Otic (CN IX), Pterygopalatine (CN VII), Submandibular (CN VII) and Intramural (CN X)

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3
Q

Nerves traversing the jugular foramen?

A

CN IX, X, XI

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4
Q

Nerves traversing the supraorbital fissure?

A

CN III, CN IV, V1 [opthalmic]

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5
Q

Nerves traversing the cavernous sinus?

A

CN III, CN IV, V1 [opthalmic] and V2 [maxillary] + internal carotid plexus [sympathetic]

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6
Q

Nerve traversing the foramen rotundum?

A

CN V2 [maxillary]

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7
Q

Nerve traversing the foramen ovale?

A

CN V3 [mandibular]

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8
Q

Nerves traversing the foramen magnum?

A

CN XI + sympathetic plexus on vertebral artery

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9
Q

Nerves traversing the internal auditory meatus?

A

CN VII, VIII

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10
Q

Nerve traversing the stylomastoid foramen?

A

CN VII

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11
Q

Muscles innervated by CN V?

A

Temporalis, masseter, medial and lateral pterygoid, anterior belly of digastric muscle, tensor tympani, tensor veli palatini, mylohyoid

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12
Q

Motor signs with CN V injury?

A

Asymmetric jaw closing (deviates to good side), atrophy of temporalis, maseter

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13
Q

GSA innervation to upper eyelid?

A

CN V: opthalmic division

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14
Q

GSA innervation to lower eyelid?

A

CN V: maxillary divison

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15
Q

GSA innervation to tip of nose?

A

CN V: opthalmic division

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16
Q

GSA innervation to upper lip?

A

CN V: maxillary divison

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17
Q

GSA innervation to lower lip?

A

CN V: mandibular division

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18
Q

GSA innervation to anterior 2/3 of tongue?

A

CN V: mandibular division

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19
Q

Muscles innervated by CN VII?

A

Muscles of facial expression, posterior belly of digastric, stylohyoid, stapedius

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20
Q

Motor signs with CN VII injury?

A

Bell’s palsy: complete facial paralysis: patient can’t wrinkle forehead, close eye tightly or smile on affected side

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21
Q

Muscle innervated by CN IX?

A

Stylopharyngeus

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22
Q

Motor signs with CN IX injury?

A

Dysphagia

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23
Q

Skeletal muscles innervated by CN X?

A

Levator veli palatini palatoglossus, all pharyngeal (except stylopharyngeus), laryngeal + esophagus

24
Q

Skeletal muscle innervated by recurrent laryngeal n?

A

All laryngeal muscles except cricothyroid

25
Q

Skeletal muscle innervated by external laryngeal n?

A

Cricothyroid (mabes some constrictor m.)

26
Q

Motor signs with CN X injury?

A

Dysphagia, hoarseness, sagging palate, uvula deviates to opposite side

27
Q

Muscles innervated by CN XI?

A

Trapezius, SCM

28
Q

Motor signs with injury to CN XI?

A

Weakness shrugging shoulder, cannot abduct humerus beyond 90*, weakness turning head to opposite side

29
Q

Muscles innervated by CN XII?

A

Genioglossus, hyoglossus, styloglossus, intrinsic tongue muscles

30
Q

Motor signs with CN XII injury?

A

Fasciculations, atrophy, on attempted protrustion the tongue deviates to side of the lesion

31
Q

Skin innervated by CN VII, IX and X?

A

Small area around ear

32
Q

What is Ramsay Hunt syndrome?

A

Herpes infection in the geniculate ganglion

33
Q

Signs of Ramsay Hunt syndrome?

A

IL facial paralysis, hyperacusis, loss of taste, herpes vesicles on external ear, canal

34
Q

Viscera innervated by CN III?

A

Sphincter pupillae, ciliary muscle

35
Q

Viscera innervated by CN VII?

A

Mucosa of nasal cavity, oral cavity, lacrimal, submandibular, sublingual glands

36
Q

Viscera innervated by CN IX?

A

Parotid gland, mucosa of middle ear, mucosa of oropharynx

37
Q

Viscera innervated by CN X?

A

Muscosa of larynx, pharynx, all viscera of foregut and midgut

38
Q

CN and ganglion for taste at the anterior 2/3s of tongue?

A

CN VII & genticulate ganglion

39
Q

CN and ganglion for general sensory innervation to anterior 2/3 of tongue?

A

CN V & trigeminal

40
Q

CN and ganglion for taste at the posterior 1/3 of the tongue?

A

CN IX & inferior ganglion of IX

41
Q

Signs of Bell’s palsy?

A

Patient cannot wrinkle their forehead, close eye tightly, wrinkle nose, smile

42
Q

Signs of CN VII injury at the internal auditory meatus?

A

IL complete facial paralysis, dry eye, dry mouth, hyperacusis, decreased taste on anterior 2/3 of tongue

43
Q

Signs of vestibular Schwannoma?

A

Headache, papilledema, IL complete facial paralysis, dry eye, dry mouth, decreased taste on anterior 2/3 of tongue, hearing loss/tinnitus

44
Q

Signs of CN VII injury in facial canal?

A

IL complete facial paralysis; dry mouth, decreased taste on anterior 2/3 of tongue

45
Q

Signs of CN VII injury at the stylomastoid foramen?

A

IL complete facial paralysis

46
Q

Signs of injury to chorda tympani?

A

Loss of taste on anterior 2/3 of tongue, dry mouth

47
Q

Signs and symptoms of injury to hypoglossal nerve?

A

IL, tongue paralysis; on protrusion tongue points towards leison

48
Q

Signs and symptoms of injury to the motor root of the trigeminal nerve?

A

IL, paralysis of muscles of mastification, weakness in jaw closing, protusion, dry mouth [parotid]

49
Q

Signs and symptoms of injury to the tympanic nerve (CN IX)?

A

Dry mouth [parotid]

50
Q

Nerves for corneal reflex? [afferent efferent]

A

CN V, CN VII

51
Q

Nerves for pupillary light reflex? [afferent efferent]

A

CN II, CN III

52
Q

Nerves for jaw jerk? [afferent efferent]

A

CN V, CN V

53
Q

Nerves for cough reflex? [afferent efferent]

A

CN X, CN X [+ C3-T12 for diaphragm and intercostals]

54
Q

Nerves for gag reflex? [afferent efferent]

A

CN IX, CN X

55
Q

Nerve most likely affected with aneursym of ICA in cavernous sinus

A

CN VI

LECOM MS1 Gross Anatomy - Head/Neck 2022 (+Shelf) (29 decks)

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