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Neurology Anatomy and Physiology > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What is the modality of CN I?

A

Smell (special sensory)

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2
Q

What is the cranial foramina of CN I?

A

Cribiform plate of ethmoid bone

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3
Q

Where does CN I synapse?

A

Olfactory bulb

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4
Q

What is the modality of CN II?

A

Vision (special sensory)

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5
Q

What is the cranial foramina of CN I?

A

Optic canal

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6
Q

Where does CN II connect with the CNS?

A

Diencephalon

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7
Q

How can CN II be tested?

A

Acuity
Colour
Fields
Reflexes

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8
Q

What are the modalities of CN III?

A 
Motor (eye movement)
Pupil constriction (parasympathetic)
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9
Q

What is the cranial foramina of CN III?

A

Superior orbital fissure

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10
Q

Where does CN III connect with the CNs?

A

Midbrain

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11
Q

Where does CN IV connect with the CNS?

A

Midbrain

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12
Q

What is the cranial foramina of CN IV?

A

Superior orbital fissure

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13
Q

Where does CN VI connect with the CNS?

A

Pontomedullary junction

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14
Q

Within what structure does CN VI travel towards the orbit?

A

Cavernous sinus

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15
Q

What is the cranial foramina of CN VI?

A

Superior orbital fissure

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16
Q

What test can be used to test CNs III, IV and VI?

A

‘H’ test

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17
Q

Axons from which structures form CN VIII?

A

Cochlear and vestibular

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18
Q

What is the cranial foramina of CN VIII?

A

Internal acoustic meatus

19
Q

Where does CN VIII connect with the CNS?

A

Pontomedullary junction

20
Q

CN XI supplies which two muscles?

A

Sternocleidomastoid and trapezius

21
Q

Where does CN XI connect with the CNS?

A

Cervical spinal cord

22
Q

Describe the intracranial course of CN XI

A

Ascends through foramen magnum then travels toward jugular foramen

23
Q

What is the cranial foramina of CN XI?

A

Jugular foramen

24
Q

How can CN XI be tested clinically?

A

Ask patient to shrug shoulders and turn head to neck

25
Q

Where does CN XII connect to the CNS?

A

Via rootlets lateral to pyramids of medulla oblongata

26
Q

What is the cranial foramina of CN XII?

A

Hypoglossal canal

27
Q

Pathology of the right CN XII will cause the tongue to stick out in what direction?

A

Right

28
Q

What are the three divisions of CN V?

A

Ophthalmic (CN V1)
Maxillary (CN V2)
Mandibular (CN V3)

29
Q

What are the cranial foramina of CN V?

A

CN V1 - SOF
CN V2 - foramen rotundum
CN V3 - foramen ovale

30
Q

What is the sensory supply of CN V?

A

Face (CN V1 - top, CN V2 - middle and CV3 - bottom)

31
Q

What is the motor function of CN V3?

A

Jaw opening and closing

32
Q

Where does CN VII connect to the CNS?

A

Pontomedullary junction

33
Q

What is the cranial foramina of CN VII?

A

Internal acoustic meatus

Stylomastoid foramen

34
Q

How is the motor function of CN VII tested clinically?

A

Asking patient to raise eyebrows, close eyes, smile and puff out cheeks

35
Q

Where does CN IX connect with the CNS?

A

Medulla oblongata

36
Q

What is the cranial foramina of CN IX?

A

Jugular foramen

37
Q

What are the modalities of CN IX?

A 
General sensory
Special sensory
Visceral afferent
Somatic motor
Parasympathetic
38
Q

Where does CN X connect with the CNS?

A

Medulla oblongata

39
Q

What is the cranial foramina of CN X?

A

Jugular foramen

40
Q

CN X runs within what structure in the neck?

A

Carotid sheath

41
Q

What branch is given off by CN X that supplies the laryngeal muscles?

A

Recurrent laryngeal nerve

42
Q

How can CN X be tested clinically?

A

Asking patient to say ahh
Asking patient to swallow water
Asking patient to talk

43
Q

Pathology of the right CN X will cause the uvula to pull to which side?

A

Left

Neurology Anatomy and Physiology (14 decks)

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