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Flashcards in Neuro 1 Deck (74)
1

Cranial nerve(s) arising from the spinal cord?

CN XI [accessory nucleus is found at C1 - C4 spinal cord levels]

2

Cranial nerve(s) arising from the medulla oblongata?

CN IX, X, XII

3

Cranial nerve(s) arising from the pontomedullary junction?

CN VI, VII, VIII

4

Cranial nerve(s) arising from the pontocerebellar angle?

CN VII and VIII

5

Cranial nerve(s) arising from the pons?

CN V, VII

6

Cranial nerve(s) arising from the midbrain?

CN III, IV

7

Cranial nerve(s) arising from the diencephalon?

CN II

8

Cranial nerve(s) arising from the telencephalon?

CN I

9

Signs of Foster Kennedy syndrome?

(olfactory groove meningioma), IL anosmia, IL optic atrophy, CL papilledema

10

Cranial nerve sensory ganglia?

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

11

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

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

12

Nerves traversing the jugular foramen?

CN IX, X, XI

13

Nerves traversing the supraorbital fissure?

CN III, IV, V1 [ophthalmic] and VI

14

Nerves traversing the cavernous sinus?

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

15

Nerve traversing the foramen rotundum?

CN V2 [maxillary]

16

Nerve traversing the foramen ovale?

CN V3 [mandibular]

17

Nerves traversing the foramen magnum?

CN XI + sympathetic plexus on vertebral artery

18

Nerves traversing the internal auditory meatus?

CN VII, VIII

19

Nerve traversing the stylomastoid foramen?

CN VII

20

Brainstem Nuclei for CN III?

oculomotor, Edinger-Westphal

21

Brainstem Nucleus for CN IV?

trochlear

22

What CN decussates before exiting the brainstem?

CN IV

23

Brainstem Nuclei for CN V?

chief sensory nucleus, mesencephalic, spinal trigeminal, trigeminal motor nucleus

24

Brainstem Nucleus for CN VI?

abducens

25

Brainstem Nuclei for CN VII?

facial, superior salivatory, spinal trigeminal, solitary

26

Brainstem Nuclei for CN IX?

nucleus ambiguous, inferior salivatory, spinal trigeminal, solitary

27

Brainstem Nuclei for CN X?

nucleus ambiguous, dorsal vagal, spinal trigeminal, solitary

28

Nucleus for CN XI?

accessory nucleus (cervical spinal cord)

29

Brainstem Nucleus for CN XII?

hypoglossal

30

Muscles innervated by CN III?

levator palpebrae, superior rectus, medial rectus, inferior oblique, inferior rectus, ciliary muscle, constrictor pupillae

31

Three components of the near triad?

3 by III; convergance of eyes, pupillary constriction, contraction of ciliary muscle

32

Muscle innervated by CN IV?

superior oblique

33

Action of muscle innervated by CN IV?

intorsion, abduction and depression [turns pupil down and out]

34

Action to test muscle innervated by CN IV?

adduct and depress [in and then down]

35

Muscle innervated by CN VI?

lateral rectus

36

Signs of compressive injury to CN III?

dilated pupil with normal eye movements

37

Signs of diabetic infarct in CN III?

oculomotor palsy with normal pupil

38

Sign of injury to CN IV?

diplopia worse when walking down stairs; improves with head tilt to opposite side

39

Sign of injury to CN VI?

diplopia improves with head turn towards paralyzed muscle

40

Location of horizontal gaze center?

pons

41

Location of vertical gaze center?

midbrain

42

Signs of Argyll-Robertson pupil?

pupil accomadates but doesn't react [to light]; tertiary syphillis, aka. "prostitutes pupil"

43

Signs of internuclear opthalmoplegia?

Injury to MLF [demyelination in MS] - on leftward gaze: right eye does not adduct (convergance intact)

44

Structures injured in "one-and-a-half" syndrome?

abducens nucleus and both MLF

45

Signs of injury to the right abducens nerve?

IL CN VI palsy: cannot abduct eye

46

Sign of injury to right abducens nucleus?

on rightward gaze: R eye does not abduct, L eye does not adduct

47

Eye movement deficits in right medial pontine syndrome?

on rightward gaze: R eye does not abduct, L eye does not adduct + on leftward gaze R eye does not adduct

48

Three causes of ptosis?

CN III palsy, Horner syndrome, myasthenia gravis

49

Muscles innervated by CN V?

temporalis, masseter, medial and lateral pterygoid, ant digastric, tensor tympani, tensor veli palatinin, mylohyoid

50

Motor signs with CN V injury?

asymmetric jaw closing (deviates to good side), atrophy of temporalis, masseter

51

Muscles innervated by CN VII?

muscles of facial expression, post digastic, stylohyoid, stapedius

52

Motor signs with CN VII injury?

Bell's palsy: complete facial paralysis - can't smile or wrinkle forehead

53

Muscle innervated by CN IX?

stylopharyngeus

54

Motor signs with CN IX injury?

dysphagia

55

Skeleteal muscles innervated by CN X?

levator veli palatini, palatoglossus, pharyngeal, laryngeal + esophageal

56

Motor signs with CN X injury?

dysphagia, hoarsness, sagging palate, uvula deviates to opposite side

57

Muscles innervated by CN XI?

trapezius, SCM

58

Motor signs with injury to CN XI?

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

59

Muscles innervated by CN XII?

genioglossus, hyoglossus, styloglossus, instrinsic tongue muscles

60

Motor signs with CN XII injury?

tongue deviates to side of lesion on protrusion, atrophy of tongue muscles [compare to UMN injury]

61

Skin innervated by CN V?

face [V1 - forehead, upper eyelid + nose; V2 - cheek, lower eyelid, upper lip; V3 - jaw, lower lip]

62

Skin innervated by CN VII, IX and X?

small area around ear

63

What is Ramsay Hunt syndrome?

herpes infection in the geniculate ganglion = blisters on pinna

64

Signs of Ramsay Hunt syndrome?

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

65

Viscera innervated by CN III?

sphincter pupillar, ciliary muscle

66

Viscera innervated by CN VII?

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

67

Viscera innervated by CN IX?

parotid gland, mucosa of middle ear, mucosa of oropharynx

68

Viscera innervated by CN X?

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

69

CN/ganglia/nucleus for taste at the anterior 2/3s of tongue?

CN VII/geniculate/solitary

70

General sensory innervation to anterior 2/3 of tongue?

CN V

71

CN/ganglia/nucleus for taste at the posterior 1/3 of the tongue?

CN IX/inferior ganglion of IX/solitary

72

Signs of CN VII injury at the internal auditory meatus?

IL complete facial paralysis, dry eye, dry mouth, hyperacusis, decreased taste on ant 2/3 of tongue [tinnitus/hearing loss if CN VIII affected]

73

Signs of CN VIII injury in facial canal?

IL complete facial paralysis; decreased taste on ant 2/3 of tongue

74

Signs of CN VII injury at the stylomastoid foramen?

IL complete facial paralysis