Crianial nerve quiz

Question 1

Mydriasis vs miosis

Answer 1

Mydriasis = pupillary dilation
Miosis = pupillary constriction

Question 2

What is vestibulo neurnoitis?

Answer 2

Vertigo following an infection. No hearing loss or tinitus

Question 3

What nerve is suseptible to damage in icp?

Answer 3

6th nerve - due to long intracranial course

Question 4

What are causes of facial nerve palsy?

Answer 4

Lower motor Neuron:

Infective: Otitis media, Malignant otitis externa, HIV, Lyme’s disease, Herpes Zoster Virus (Ramsay Hunt Syndrome)
Systemic Disease: Diabetes, Sarcoidosis, Leukaemia, Multiple sclerosis, Guillain–Barré syndrome
Tumours: Acoustic neuroma, Parotid tumours, Cholesteatomas
Trauma: Direct nerve trauma, Damage during surgery, Base of skull fractures
Bell’s Palsy

Upper Motor Neuron:

Unilateral upper motor lesions occur in:
Cerebrovascular accidents (strokes)
Tumours
Bilateral upper motor neuron lesions are rare. They may occur in:
Pseudobulbar palsies
Motor neurone disease