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Head & Neck Anatomy > Lec 2 Cranial Foramen > Flashcards

Lec 2 Cranial Foramen Flashcards

1
Q

What cranial nerve is I?

A

olfactory (1)

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2
Q

What cranial nerve is II?

A

optic (2)

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3
Q

What cranial nerve is III?

A

oculomotor (3)

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4
Q

What cranial nerve is IV?

A

trochlear (4)

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5
Q

What cranial nerve is V?

A

trigeminal (5)

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6
Q

What cranial nerve is VI?

A

Abducent (6)

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7
Q

What cranial nerve is VII?

A

Facial (7)

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8
Q

What cranial nerve is VIII?

A

Vestibulocochlear (8)

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9
Q

What cranial nerve is IX?

A

Glossopharyngeal (9)

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10
Q

What cranial nerve is X?

A

vagus (10)

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11
Q

What cranial nerve is XI?

A

spinal accessory (11)

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12
Q

What cranial nerve is XII?

A

hypoglossal (12)

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13
Q

What type of fibers are in the olfactory nerve (I)?

A

special sensory

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14
Q

What type of fibers are in the optic nerve (II)?

A

special sensory

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15
Q

What type of fibers are in the oculomotor nerve (III)?

A

motor

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16
Q

What type of fibers are in the trochlear nerve (IV)?

A

motor

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17
Q

What type of fibers are in the trigeminal nerve (V)?

A

mixed (motor root and sensory root)

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18
Q

What type of fibers are in the abduent (VI)?

A

motor

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19
Q

What type of fibers are in the facial nerve (VII)?

A

mixed (primary root is motor and intermediate root is mixed)

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20
Q

What type of fibers are in the vestibulocochlear nerve (VIII)?

A

special sensory

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21
Q

What type of fibers are in the glossopharyngeal (IX)?

A

mixed

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22
Q

What type of fibers are in the vagus (X)?

A

mixed

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23
Q

What type of fibers are in the spinal accessory nerve (XI)?

A

motor

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24
Q

What type of fibers are in the hypoglossal nerve (XII)?

A

motor

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25
Q

What is the function of CN I?

A

sensory: smell (olfactory nerve)

26
Q

What is the function of CN II?

A

sensory: vision (optic nerve)

27
Q

What is the function of the CN III?

A

motor: ciliary muscles, sphinter pupillae, all extrinsic muscles of th eye except a few (oculomotor nerve)

28
Q

What is the function of CN IV?

A

motor: superior oblique muscle of eye (trochlear)

29
Q

What is the function of CN V?

A

sensory: face; oral, nasal, and sinus mucosa; teeth; anterior 2/3 of tongue
motor: muscles of mastication +4 other muscles
(trigeminal)

30
Q

What is the function of CN VI?

A

motor: lateral rectus muscle of eye (abducent)

31
Q

What is the function of CN VII?

A

Motor: submandibular, sublingual, lacrimal, nasal, and palatine glands
Sensory: taste from anterior 2/3 of tongue, soft palate
(Facial)

32
Q

What is the function of CN VIII?

A

vestibular Sensory: equilibrium, motion
cochlear Sensory: hearing
(Vestibulocochlear)

33
Q

What is the function of CN IX

A

Motor: stylopharyngeus, parotid gland
Sensory: taste from posterior 1/3 of tongue; general sensation pharynx, tonsillar, sinus, pharyngotymphanic tube middle ear cavity
(Glossopharyngeal)

34
Q

What is the function of CN X?

A

Motor: palate, pharynx, larynx, trachea, bronchial tree, heart, GI tract
Sensory: pharynx, larynx; reflex sensory from trachiobronchial tree, lungs, heart, GI tract
(Vagus)

35
Q

What is the function of CN XI?

A

Motor: sternocleidomastoid and trapezius
(spinal accessory)

36
Q

What is the function of CN XII?

A

Motor: all intrinsic and extrinsic msucles of tongue
(hypoglossal)

37
Q

What is the general distribution of the olfactory nerve (I)?

A

olfactory mucosa of nose

38
Q

What is the general distribution of the optic nerve (II)?

A

retina of eye

39
Q

What is the general distribution of the oculomotor (III)?

A

intra-ocular and four extra-ocular muscles

40
Q

What is the general distribution of the trochlear nerve (IV)?

A

one extra-ocular muscle (superior oblique)

41
Q

What is the general distribution of the trigeminal nerve (V)?

A

derivatives of the frontonasal process and 1st pharyngeal arch

42
Q

What is the general distribution of the abducent (VI)?

A

one extra-ocular muscle

43
Q

What is the general distribution of the facial nerve (VII)?

A

derivatives of 2nd pharyngeal arch

44
Q

What is the general distribution of the vestibulocochlear nerve (VIII)?

A

internal ear

45
Q

What is the general distribution of the glossopharyngeal nerve (IX)?

A

derivatives of 3rd pharyngeal arch

46
Q

What is the general distribution of the vaugs nerve (X)?

A

derivatives of 4th pharyngeal arch

47
Q

What is the general distribution of the spinal accessory nerve (XI)?

A

superficial layer of neck

48
Q

What is the general distribution of the hypoglossal nerve (XII)?

A

muscles of tongue

49
Q

Which foramen is posterior and lateral to foramen ovale?

A

foramen spinosum

50
Q

Which foramen can disappear and go away and if not it can grow growths?

A

foramen cecum

51
Q

What spot of lesion can affect the CN I?

A

fracture of cribiform plate

52
Q

What spot of lesion can affect the CN II?

A
  • direct trauma to orbit or eyeball; fracture involving opic canal
  • pressure on optic pathway; laceration or intracerebral clot in temporal, parietal, or occipital lobes of brain
53
Q

What spot of lesion can affect the CN III?

A

pressure from herniating uncus on nerve; fracture involving cavernous sinus; aneurysms

54
Q

What spot of lesion can affect the CN IV?

A

stretching of nerve during its course around brainstem; fracture of orbit

55
Q

What spot of lesion can affect the CN V?

A

injury to terminal branches in roof of maxillary sinus; pathological processes affecting trigeminal ganglion

56
Q

What spot of lesion can affect the CN VI?

A

base of brain or fracture involving cavernous sinus or orbit

57
Q

What spot of lesion can affect the CN VII?

A
  • laceration or contusion in partoid region
  • fracture of temporal bone
  • intracranial hematoma
58
Q

What spot of lesion can affect CN VIII?

A

tumor of nerve

59
Q

What spot of lesion can affect CN IX?

A

brainstem lesion or deep laceration of neck

60
Q

What spot of lesion can affect CN X?

A

brainstem lesio of deep laceration of neck

61
Q

What spot of lesion can affect CN XI?

A

laceration of neck

62
Q

What spot of lesion can affect CN XII?

A

neck laceration; fractures of cranial base

Head & Neck Anatomy (11 decks)

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