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NMSK > Cranial Nerves And Their Trsts > Flashcards

Cranial Nerves And Their Trsts Flashcards

1
Q

What is CN 1 called and what is its function

A

Olfactory nerve
Sense of smell (sensory)

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2
Q

What is CN 2 and what is its function

A

Optic
Vision (sensory)

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3
Q

What is CN 3 and what is its function

A

Oculomotor
Motor to eye muscles to move eye medially and dilate pupil

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4
Q

What is CN 4 and what is its function

A

Trochlear
Motor to eye muscle rotation

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5
Q

What is CN 5 and what is its function

A

Trigeminal nerve (both)
Three branches;
- mandibullar (motor of jaw muscles/ chewing)
- maxillary (sensory)
- opthalmic (sensory)

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6
Q

What is CN 10 and what is its function

A

Vagus nerve (both)
Parasympathetic supply
Sensory and motor to pharynx and larynx Parasympathetic to major internal organs

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7
Q

What is CN 6 and its function

A

Abducens
Motor to eye muscles
Innervates lateral rectus muscle (moves eye laterally)

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8
Q

What is CN 8 and its function

A

Vestobulocochlear- sensory
Hearing and balance

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9
Q

What is CN 9 and its function

A

Glossopharengeal
Both
Sensory to tongue
Motor to larynx and pharynx

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10
Q

What is CN 11 and its function

A

Accessory nerve
Motor to trapezius and 3 neck muscles

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11
Q

What is CN 12 and its function

A

Hypoglossal nerve
Motor nerve
Tongue

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12
Q

What is the test for CN 1

A

Walk past animal with sweets and see if they follow (don’t let them see)

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13
Q

What is the test for CN 2

A

Menace response (not in first 14 days of life as it’s learnt)
Pupillary light reflex
Tracking an object

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14
Q

What is the test for CN 3

A

Strabismus- check for normal alightment of the eye
Mydriasis- pupils can’t constrict so are dilated
Ptosis- can’t raise upper eyelid

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15
Q

What is the test for CN 4

A

Tracking
Extend head and look for stabismus (abnormal alignment of the eyes)

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16
Q

What is the test for CN 5

A

Check whether jaw is functioning and chewing is normal
jaw tone, muscle mass of jaw
Palpebral reflex- Check blink reflex (touch medial and lateral canthus which should cause blinking of eye)

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17
Q

What is the test for CN 6

A

Corneal reflex
Strabismus

18
Q

What is the test for CN 7

A

Check for facial symmetry
Palpebral response
Menace test

19
Q

What is the CN 8 test

A

Vestibular eye drop test
BAER ( checks hearing of dog)
Check for nystagmus (crazy movement of eyes)

20
Q

What is the CN 9 test

A

Check Swallowing and watch eating
endoscopy

21
Q

What is the cranial nerve 10 test

A

Watch eating
Slap test (horses)
Bark
Endoscopy
Gag reflex
HR
BP

22
Q

What is CN 11 test

A

Watch eating
Watch neck movement

23
Q

What is the CN 12 test

A

Deviation of tongue to the side of the lesion
Do tongue retraction test

24
Q

Where does CN 1 leave the skull

A

Cribs canal

25
Q

Where does CN 2 leave the skull

A

Optic canal

26
Q

Where does CN 3 leave the skull

A

Orbital fissure

27
Q

Where does CN 4 leave the skull

A

Orbital fissure

28
Q

Where does the opthalmic branch of CN 5 leave

A

Orbital fissure

29
Q

Where does the maxillary branch of the CN 5 leave

A

Foramen rotundum

30
Q

Where does the mandibular branch of the CN 5 leave skull

A

Foramen ovals

31
Q

Where does the CN 6 leave the skull

A

Orbital fissure

32
Q

Where does the facial nerve leave the skull

A

Internal acoustic meatus

33
Q

Where does the CN 8 leave the skull

A

Internal acoustic meatus

34
Q

Where does CN 9 leave the skull

A

Jugular foramen

35
Q

Where does CN 10 exit the skull

A

Jugular foramen

36
Q

Where does CN 11 leave the skull

A

Jugular foramen

37
Q

Where does CN 12 exit the skull

A

Hypoglossal canal

38
Q

What muscles does oculomotor nerve innervate

A

Superior rectus
Inferior rectus
Medial rectus
Inferior oblique

39
Q

What muscles are innervated by trochlear nerve

A

Superior oblique muscle

40
Q

What does the abductens nerve innervate

A

Lateral rectus \

NMSK (47 decks)

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