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ANATOMY SEMESTER 2 > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

What is cranial nerve number I

A

Olfactory - cribiform plate

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2
Q

What is cranial nerve number II

A

Optic - optic canal

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3
Q

What is cranial nerve number III

A

Occulomotor - superior orbital fissure

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4
Q

What is cranial nerve number IV

A

Trochlea - superior orbital fissure

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5
Q

What is cranial nerve number V

A

Trigeminal
Opthalamic - superior orbital fissure
maxillary - fossa rotundum
mandibular - fossa ovale

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6
Q

What is cranial nerve number VI

A

Abducens - superior orbital fissure

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7
Q

What is cranial nerve number VII

A

Facial - Internal acoustic meatus

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8
Q

What is cranial nerve number VIII

A

Vestibulocochlear - internal acoustic meatus

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9
Q

What is cranial nerve number IX

A

Glossopharyngeal - jugular foramen

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10
Q

What is cranial nerve number X

A

Vagus - jugular foramen

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11
Q

What is cranial nerve number XI

A

Accessory - jugular foramen

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12
Q

What is cranial nerve number XII

A

Hypoglossal - hypoglossal canal

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13
Q

What is the pathway of cranial nerve I

A

Olfactory epithelium to the olfactory bulb

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14
Q

What is the pathway of cranial nerve II

A

Retina to diencephalon

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15
Q

What is the pathway of cranial nerve III

A

Midbrain to most of the eye muscles (not the superior oblique or lateral rectus)

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16
Q

What is the pathway of cranial nerve IV

A

Midbrain to superior oblique

17
Q

What is the pathway of cranial nerve V

A

Opthalamic - Upper eyelid/face to pons
maxillary - Mid face to pons
Mandibular - Lower face to pons

18
Q

What is the pathway of cranial nerve VI

A

Pons to lateral rectus

19
Q

What is the pathway of cranial nerve VII

A

Pons to facial muscles

20
Q

What is the pathway of cranial nerve VIII

A

Inner ear to pons

21
Q

What is the pathway of cranial nerve IV

A

Medulla to carotid artery

22
Q

What is the pathway of cranial nerve V

A

Medulla to heart and pharynx and viscera

23
Q

What is the pathway of cranial nerve VI

A

Medulla/spinal cord to neck muscles and back

24
Q

What is the pathway of cranial nerve VII

A

Medulla to tongue

25
Q

Where do sensory nuclei lie

A

More laterally

26
Q

Where do motor nuclei lie

A

More medially

27
Q

Where do autonomic nuclei lie

A

In the middle of motor and sensory

28
Q

What is the function of cranial nerve I

A

Carries modality of smell

test by smelling something familiar

29
Q

What is the function of cranial nerve II

A

Vision - test by use of a reading chart

30
Q

What is the function of cranial nerve III

A

Movements of the eye - lifts up eyelids, rotates eyeball and constricts pupil - test by seeing if eyelids droop and does the pupil constrict at light

31
Q

What is the function of cranial nerve IV

A

Turns the eye (superior oblique) - Patient follows an H in the air

32
Q

What is the function of cranial nerve V

A

Test sensory portion - cotton wool on the face in areas in which they innervate
Motor test - Ask them to clench their teeth

33
Q

What is the function of cranial nerve VI

A

Controls the lateral rectus muscle - test eye abduction

34
Q

What is the function of cranial nerve VII

A

Motor branches to muscles of facial expression
Innervates submandibular and sub lingual glands.
Provides taste to anterior 2/3 of tongue
Test by raising eyebrows, scrunching eyes, showing teeth, puffing cheeks and closing eyes against resistance

35
Q

What is the function of cranial nerve VIII

A

Hearing and balance - use Rinne’s and Weber test

36
Q

What is the function of cranial nerve IX

A

Sensory and motor to posterior 1/3 of tongue and pharynx
Parasympathetic innervation of parotid gland
Test by gag reflex

37
Q

What is the function of cranial nerve X

A

Motor supply to the pharynx and innervation to heart
Sensory functions to pharynx, larynx and heart
Ask the person to speak (Hoarseness in voice) also gag reflex

38
Q

What is the function of cranial nerve XI

A

Shrugging of shoulders - motor innervation to sternomastoid muscle and trapezius

39
Q

What is the function of cranial nerve XII

A

Movements of the tongue

Test by sticking out the tongue and moving it side to side

ANATOMY SEMESTER 2 (3 decks)

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