Cranial Nerves Flashcards by Chloe . | Brainscape

Q

How may CNI be damaged?

A

Head injury
SOL
Frontal

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Q

How may CNII be damaged?

A

Optic neuritis
Ischaemia
Compression
Vit B12 def

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Q

What does CNII damage cause?

A

Monocular visual loss
RAPD
Papilloedema

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Q

What does CNIII palsy cause?

A

“Down and out” eye

Fixed dilated pupil

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Q

How may CNIII be damaged?

A

Raised ICP
Haemorrhage
Infarction

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Q

What does CNIV palsy cause?

A

Diplopia worse on looking down

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Q

How may CNV be damaged?

A

Brainstem lesion
Stroke
MS

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Q

What does CNV damaged cause?

A

Numbness and paraesthesia over face, tongue and buccal mucosa

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Q

How many CNVI be damaged?

A

MS
HTN
DM

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Q

What does CNVI damage cause?

A

Horizontal diplopia

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Q

What does CNVII damage cause?

A

Weakness in face

Loss of taste

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Q

How may CNVII be damaged?

A

Parotid tumour

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Q

What does CNVIII damage cause?

A

Sensorineural deafness
Tinnitus
Vertigo
Nystagmus

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Q

What does CNXI damage cause?

A

Impaired shoulder shrug and head rotation

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Q

How many CNXII be damaged?

A

Base of skull fracture

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Q

How does CNXII damage present?

A

impaired tongue movement

Q

What causes Horner’s syndrome?

A

Unilateral sympathetic nerve lesion

Q

Give causes of Horner’s syndrome

A

Pancoast tumour

Carotid dissection

Q

What is Horner’s syndrome?

A

Meiosis
Ptosis
Enopthalmus
Facial anhidrosis

Q

What is Bell’s palsy?

A

Acute onset unilateral LMN facial weakness

Q

How does Bell’s palsy present?

A

Discomfort behind ipsilateral ear

Unilateral facial weakness

Q

What is given in Bell’s palsy to increase recovery?

A

Oral pred