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Ocular Anatomy and Physiology : > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

How many pairs of Cranial Nerves?

A

12 Pairs

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2
Q

List The Cranial Nerves

A 
(I) Olfactory 
(II) Optic 
(III) Oculomotor 
(IV) Trochlear 
(V) Trigeminal 
(VI) Abducens 
(VII) Facial 
(VIII) Vestibulocochlear 
(IX) Glossopharyngeal 
(X) Vagus 
(XI) Accessory 
(XII) Hypoglossal
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3
Q

Cranial Nerve 1

A

Olfactory

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4
Q

Cranial Nerve 2

A

Optic

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5
Q

Cranial Nerve 3

A

Oculomotor

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6
Q

Cranial Nerve 4

A

Trochlear

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7
Q

Cranial Nerve 5

A

Trigimenal

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8
Q

Cranial Nerve 6

A

Abducens

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9
Q

Cranial Nerve 7

A

Facial

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10
Q

Cranial Nerve 8

A

Vestibulocochlear

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11
Q

Cranial Nerve 9

A

Glossopharyngeal

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12
Q

Cranial Nerve 10

A

Vagus

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13
Q

Cranial Nerve 11

A

Accessory

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14
Q

Cranial Nerve 12

A

Hypoglossal

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15
Q

Function of Olfactory Nerve (I)

Sensory or Motor?

A

Smell

Sensory

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16
Q

Function of Optic Nerve (II)

Sensory or Motor?

A

Vision

Sensory

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17
Q

Function of OculoMOTOR (III)

Sensory or Motor?

A

Eye Movement :

Sensory and Motor

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18
Q

Function of Trochlear (IV)

Sensory or Motor?

A

Eye Movement

Motor

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19
Q

Function of Trigeminal (V)

Sensory of Motor?

A

Facial Sensation, Somatosensation to Anterior 2/3
Open and Close Jaw
Sensory and Motor

20
Q

Function of Abducens (VI)

Sensory or Motor?

A

Eye Movement

Sensory

21
Q

Function of Facial (VII)

Sensory or Motor?

A

Taste to Anterior 2/3 of Tongue
Facial Expression, Lacrimation, Salivation
Sensory and Motor

22
Q

Function of Vestibulocochlear (VIII)

Sensory or Motor?

A

Hearing and Balance

Sensory

23
Q

Function of Glossopharyngeal (IX)

Sensory or Motor?

A

Somatosensation, Taste to Posterior 1/3 of Tongue
Swallowing
Sensory and Motor

24
Q

Function of Vagus (X)

Sensory or Motor?

A

Taste to Epiglottis
Swallowing, Talking, Coughing
Sensory and Motor

25
Q

Function of Accessory (XI)

Sensory or Motor?

A

Shoulder Shrugging

Motor

26
Q

Function of Hypoglossal (XII)

Sensory or Motor?

A

Tongue Movement

Motor

27
Q

Which Nerves Are Related To The Eyes?

A 
CN 2 : Optic Nerve 
CN 3 : Oculomotor Nerve
CN 4 : Trochlear Nerve 
CN 5 : Trigeminal
CN 6 : Abducens 
CN 7 : Facial
28
Q

Optic Nerve

A

Main Nerve for Providing Vision

29
Q

Oculomotor Nerve

A

Supplies 4 of EXTRAOCULAR NERVE

30
Q

What divisions does Oculomotor divide into?

A

Superior Division :

  • Superior Rectus
  • Levator Palpebrae

Inferior Division :

  • Inferior Rectus
  • Medial Rectus
  • Inferior Oblique
31
Q

What is the Superior Division?

A

Superior Muscles that Elevate the Eyelids
Superior Rectus
Levator Palpebrae

32
Q

What is the Inferior Division?

A

Inferior Rectus
Lateral Rectus
Inferior Oblique Muscles

33
Q

Trochlear Nerve

A

Innervates the SUPERIOR OBLIQUE muscle
Longest and skinniest of extraocular
Only cranial nerve that leaves brainstem from back

34
Q

Abducens

A

Supplies ONE of the Extraocular Nerve

35
Q

What Extraocular Muscle from CN 6 (Abducens)

A

Lateral Rectus : Moves laterally towards the side

36
Q

Facial

A

Parasympathetic Innervation of Lacrimal and Salivary Glands

37
Q

Cilliary Ganglion

A

Pupillary Constriction

Controls the Constriction of the Pupil

38
Q

Cilliary Muscles

A

Lens Accommodation

Adjust to see shape of the lens

39
Q

Trigeminal Nerve Pathway

A

Trigeminal Nerve
Ophthalmic Nerve
Frontal —— Nasocilliary —— Lacrimal
Forehead —– Long + Short Cilliary
——————- Cornea, Iris, Cilliary Body

40
Q

What is the Extraocular Muscle from CN 4 (Trochlear)

A

Superior Oblique

41
Q

Cranial Nerve 4 (Trochlear) Innervates the..?

A

Superior Oblique Muscle

42
Q

Cranial Nerve 6 (Abducens) Innervates the..?

A

Lateral Rectus

43
Q

What does the Ophthalmic Nerve Divide into..?

A

Frontal, Nasocilliary, Lacrimal

44
Q

What does the Frontal Nerve innervate?

A

Forehead, Upper Eyelids, Sides of the Nose

45
Q

What does the Nasocilliary Divide Into..?

A

Long and Short

46
Q

What does the Lacrimal innervate?

A

Lacrimal Gland, Skin of Upper Eyelid, Conjunctiva

Ocular Anatomy and Physiology : (30 decks)

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