Lecture 8- Summaries of the cranial nerves Flashcards Preview

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Flashcards in Lecture 8- Summaries of the cranial nerves Deck (56)
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1
Q

CN I

A

olfactory

2
Q

CN II

A

optic

3
Q

CN III

A

oculomotor

4
Q

CN IV

A

trochlear

5
Q

CN Va

A

opthalmic branch of trigeminal

6
Q

CN Vb

A

maxillary branch of trigeminal

7
Q

CN Vc

A

mandibular branch of trigeminal

8
Q

CN VI

A

abducens

9
Q

CN VII

A

facial

10
Q

CN VIII

A

vestibulocochlear

11
Q

CN IX

A

glossopharyngeal

12
Q

CN X

A

vagus

13
Q

CN XI

A

spinal accessory

14
Q

CN XII

A

hypoglossal

15
Q

where does the olfactory nerve (CN I) exit

A

cribriform plate

16
Q

where does the optic nerve (CN II) exit

A

optic canal

17
Q

where does the oculomotor nerve (CN III) exit

A

Superior orbital fissure

18
Q

where does the trochlear nerve (CN IV) exit

A

Superior orbital fissure

19
Q

where does the Opthalmic branch trigeminal nerve (CN Va) exit

A

Superior orbital fissure

20
Q

where does the maxillary branch trigeminal nerve (CN Vb) exit

A

foramen rotundum

21
Q

where does the mandibular branch trigeminal nerve (CN Vc) exit

A

foramen ovale

22
Q

where does the trochlear nerve (CN VI) exit

A

Superior orbital fissure

23
Q

where does the facial nerve (CN VII) exit

A

internal acoustic meatus > stylomastoid f.

24
Q

where does the vestibulocochlear nerve (CN VIII) exit

A

internal acoustic meatus

25
Q

where does the glossopharyngeal nerve (CN IX) exit

A

jugular f.

26
Q

where does the vagus nerve (CN X) exit

A

jugular f.

27
Q

where does the spinal accessory (CN X) exit

A

jugular f.

28
Q

where does the hypoglossal nerve (CN XII) exit

A

hypoglossal canal

29
Q

modality of olfactory (CN I)

A
sensory SVS (special visceral sensory)
- smell
30
Q

modality of optic (CN II)

A
sensory SSS (special somatic sensory)
- vision
31
Q

modality of oculomotor (CN III)

A

Motor
(GSM & GVM)
- general somatic motor (skeletal muscles)
–> 4 extrinsic eye muscles and levator palpebrae superioris.

  • general visceral motor (muscles derived from pharyngeal arches)
  • –>pupillary sphincter
32
Q

modality of trochlear (CN IV)

A

motor (GSM)

  • general somatic motor
  • superior oblique is a pulley-like structure in the eye.
33
Q

modality of opthalmic branch of the trigmeninal (CN Va)

A

GSS (general sensation from skin)

  • general somatic sensory
  • Scalp, forehead and nose
34
Q

modality of maxillary branch of the trigmeninal (CN Vb)

A

GSS

- cheeks, lower eye lid, nasal mucosa, upper lid, upper teeth and palate

35
Q

modality of mandibular branch of the trigmeninal (CN Vc)

A

GSS
- anteiror 2/3 of tongue, skin over mandible and lower teeth
SVM (special visceral motor)
- muscles of mastication

36
Q

modality of abducens (CN VI)

A

motor GSM

- lateral rectus (The lateral rectus muscle is a muscle on the lateral side of the eyeball in the orbit.)

37
Q

modality of Facial (CN VII)

A

GSS
SVS
SVM
GVM

38
Q

GSS of the facial nerve

A

sensation to part of ext. ear.

SVS: taste from ant. 2/3 tongue, hard and soft palate.

39
Q

SVS of the facial nerve

A

taste from ant. 2/3 tongue, hard and soft palate.

40
Q

SVM of the facial nerve

A

muscles of facial expression.

41
Q

GVM of the facial nerve

A

lacrimal, submandibular, sublingual glands and mucous glands of mouth and nose.

42
Q

modality of Vestibulocochlear (CN VIII)

A

sensory SSS

- Hearing and balance

43
Q

modality of the glossopharyngeal (CNIX)

A

Both:
GSS

GVS

SVS

GVM

SVM

44
Q

GSS of the glossopharyngeal nerve

A

post. 1/3 tongue, ext. ear, and middle ear cavity.

45
Q

GVS of the glossopharyngeal nerve

A

carotid body and sinus.

46
Q

SVS of the glossopharyngeal nerve

A

taste from post. 1/3 tongue.

47
Q

GVM of the glossopharyngeal nerve

A

parotid gland.

48
Q

SVM of the glossopharyngeal nerve

A

stylopharyngeus

49
Q

modality of Vagus (CN X)

A

Both:
GSS

GVS

SVS

GVM

SVM

50
Q

GSS of the vagus nerve

A

ext. ear, larynx and pharynx.

51
Q

GVS of the vagus nerve

A

larynx, pharynx and, thoracic & abdominal viscera.

52
Q

SVS of the vagus nerve

A

taste from epiglottis region of tongue

53
Q

GVM of the vagus nerve

A

smooth muscles of pharynx, larynx and most of the GIT.

54
Q

SVM of the vagus nerve

A

most muscles of pharynx and larynx.

55
Q

modality of spinal accessory (CN XI)

A

Motor
(GSM & SVM)

GSM: trapezius and sternocleidomastoid.
SVM: a few fibres run with CNX to viscera.

56
Q

modality of Hypoglossal (CN XII)

A

Motor
(GSM)
Intrinsic and extrinsic tongue muscles (except the palatoglossus).

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