Cranial Nerve lesions

Question 1

What can cause cranial enrve lesions

Answer 1

Trauma, Multiple sclerosis, tumours

Question 2

What are the functions of the cranial nerves?

Answer 2

Question 3

What would present if there was a CN3 Lesion?

Answer 3

CN3 - Oculomotor nerve
Non-Functioning eye
ptosis - droopy eyelid
fixed dilated pupil

Question 4

What would present if there was a CN4 lesion

Answer 4

CN4 - Trochlear Nerve
Non functioning vertical eye movment
Diplopia

Question 5

What would present if there was a CN5 lesion

Answer 5

CN5 - Trigeminal nerve
Trigemnial neuralgia
Jaw deviation to affected side

Question 6

What would present if there was a CN6 LESION

Answer 6

CN6- Abducens nerve
Unable to aduct affected eye

Question 7

Summary of oculomotor nerve palsies

Answer 7

CN3,4,6

Question 8

What would present if there was a CN 7 lesion?

Answer 8

CN7 - Facial Nerve
Aka Bell’s Palsy
facial drop with no forhead sparing

Question 9

What would present if there was a CN 8 lesion

Answer 9

CN 8 - Acoustic nerve

Loss of balance/ hearing loss

Question 10

What would present if there was a CN 9 /10 lesion

Answer 10

CN9 - Glosspharyngeal and CN10 - Vagus nerve

Imapired Gag reflex
+
Dysphgia, resp , vocal issue

Question 11

What would present if there was a CN11 Lesion

Answer 11

CN11 - Spinal accessory
Cant shrug shoulders
cant turn head against resistance

Question 12

What would present if there was a CN12 Lesion

Answer 12

Hypoglossal Cn12
Tongue deviattes towards lesion side