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Neuroscience > The Cranial Nerves Specific questions > Flashcards

The Cranial Nerves Specific questions Flashcards

1
Q

Which nerve comes out of the cribriform plate?

A

Olfactory nerve

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2
Q

What are the 5 motor, 4 mixed and 3 sensory nerves?

A

Motor: 3, 4, 6, 11, 12
Mixed: 5, 7, 9, 10
Sensory: 1, 2 and 8

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3
Q

What does the ophthalmic branch off?

A

Branches off the ICA

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4
Q

Which foramen is related to the ophthalmic branch?

A

Optic canal

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5
Q

Which 2 nerves pass through the superior orbital fissure?

Think eye stuff

A

Think eye stuff so CNIII, CNIV and CNVI

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6
Q

Which eye lid muscle does the CNIII innervate?

A

The upper eyelid called the levator palpebrae superioris

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7
Q

Which extra-ocular muscles does CNIII innervate?

A

Superior rectus
Inferior rectus
Medial Rectus
Inferior Oblique

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8
Q

What is the rule of 4?

A

Above midbrain and midbrain: I, II, III, IV
Pons: V, VI, VII, VIII
Medulla: IX, X, XI, XII

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9
Q

If there is a problem with CNIII what happens with eye?

A

Looks down and out

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10
Q

What are the branches of CNV?

A

3 branches V1, V2, V3
V1: Ophthalmic
V2: Mandibular
V3: Maxillary

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11
Q

Where does V1, V2 and V3 come out of?

A

V1: Ophthalmic, 1/3 of V1 comes out through SOF
V2: Mandibular, foramen rotundum
V3: Maxillary, foramen ovale

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12
Q

What comes out of foramen spinosum?

A

The middle meningeal artery

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13
Q

What comes out of foramen ovale?

A

Maxillary

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14
Q

Does the mandibular branch of the CNV come out of foramen rotundum?

A

YES

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15
Q

Masseter, temporalis, lateral pterygoid, buccinators are muscles of what?

A

Mastication

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16
Q

Which CN innervates the muscles of mastication?

A

Trigeminal nerve CNV

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17
Q

Which part of the brain is the CNV located?

A

PONS

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18
Q

What other muscle does the trigeminal nerve innervate besides the muscles of mastication!? HINT T for ____

A

Tensor tympani

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19
Q

The trigeminal nerve is not a mixed CN.

A

FALSE

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20
Q

Which part of the tongue does the trigeminal nerve provide sensation to?

A

Anterior 2/3

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21
Q

Where does the abducens nerve exit?

A

SOF (superior orbital fissure)

22
Q

What happens to the eye of abducens does not work?

A

No eye abduction.

23
Q

Which part of the brain is the CNVII located?

A

PONS

24
Q

What is the pathway of the facial nerve?

A

Internal acoustic meatus - chorda tympani - stylomastoid foramen - parotid gland (NO INNERVATION)

25
Q

Which 2 nerves travel through the internal acoustic meatus?

A

CNVII and CNVIII

26
Q

Does the facial nerve provide innervation to the parotid as it passes?

A

NO

27
Q

What is the main MOTOR function of CNVII?

A

Facial muscles of expression

28
Q

What other motor functions does the CNVII have? HINT S for Seven.

A

It innervates the Stapedius of the ear

29
Q

What sensory functions does CNVII have?

A

It innervates the anterior 2/3 of the tongue for TASTE

30
Q

Which other muscle for the eye does the facial nerve innervate?

A

Orbicularis occuli, closing eye

31
Q

Which 3 nerves go through the internal jugular foramen?

A

CNIX, X and XI

32
Q

What does the glossopharyngeal nerve do?

A

Mixed function

33
Q

CNIX innervates which part of the tongue and for what?

A

Posterior 1/3 for taste

34
Q

Which muscle is particular to the CNIX which can be easily confused and forgotten?

A

Stylopharyngeus: elevates the palate

35
Q

Why is CNIX considered to have an autonomic component?

A

Because it has autonomic innervation to parotid and baroreceptors.

36
Q

Why is the CNX so important? (in terms of its function, motor or sensory)

A

Motor to all the pharynx, larynx and palatoglossus

37
Q

Which sensory functions does CNX have?

A

Sensory to pharynx, larynx, eosophagus, shares some of the 1/3 posterior of tongue, baroreceptors

38
Q

Which muscles are innervated by the accessory nerve?

A

Trapezius, sternoclenomastoid

39
Q

Which muscles are not innervated by the hypoglossal nerve?

A

Palatoglossus

40
Q

Which nerve controls the palatoglossus

A

Vagus CNX

41
Q

Where does CNXII exit?

A

Hypoglossal foramen

42
Q

The pupillary reflexes test which nerves?

A

2, 3

43
Q

The pupillary tests the _____ of the brain.

A

Midbrain

44
Q

The corneal reflex tests which nerves?

A

5, 7

45
Q

How does corneal reflex test the nerves it does?

A

Optic tracts ride on V1, V1 sends back to the nucleus and sends a neuron to CN7, orbicularis occuli.

46
Q

What is the gag reflex testing?

A

9, 10

47
Q

How does the gag reflex test the nerves it does?

A

9 is sensation, 10 is the contraction of muscles.

48
Q

The sensation and taste of the posterior 1/3 of the tongue is innervated by?

A

Glossopharyngeal

49
Q

The anterior 2/3 of the tongue sensation is innervated by?

A

Trigeminal

50
Q

The anterior 2/3 of the tongue tasting is innervated by?

A

Facial

Neuroscience (8 decks)

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