Cranial Nerves

Question 1

Enumerate the 12 cranial nerves

Answer 1

I - olfactory
II - Optic
III Oculomotor
IV - Trochelar
V - Trigeminal
VI - Abducens
VII - Facial
VIII - Vestibulocochlear / Acoustic
IX - Glossopharyngeal
X - Vagus
XI - Accesory
XII Hypoglossal

Question 2

Function of each cranial nerve

Answer 2

I (olfactory) - smell

II (optic) - vision

III (oculomotor) - pupil constriction

IV (trochlear) - Downward & inward eye movement

V (trigeminal)- Chewing & mastication / facial sensation

VI (abducens) - Lateral eye movement

VII (facial)- Facial expression/ muscles, taste

VIII (vestibulocochlear) - balance & hearing

IX (Glossopharyngeal)- Pharyngeal movement & swallowing

X (vagus)- swallowing & speaking

XI (Accessory) - neck & shoulder muscles

XII (Hypoglossal)- Tongue movement

Question 2

Vision

Answer 2

CN II - OPTIC

Question 2

Pupil constriction

Answer 2

CN III - OCULOMOTOR

Question 2

Chewing & mastication

Answer 2

CN V - TRIGEMINAL

Question 2

Sense of smell

Answer 2

CN I - OLFACTORY

Question 2

Downward, inward eye movement

Answer 2

CN IV - TROCHLEAR

Question 2

Lateral eye movement

Answer 2

CN VI - ABDUCENS

Question 2

Taste & facial muscles / expression

Answer 2

CN VII - FACIAL

Question 3

Movement of shoulder & neck muscles

Answer 3

CN XI - ACCESSORY

Question 3

Pharyngeal movement & swallowing

Answer 3

CN IX - GLOSSOPHARYNGEAL

Question 3

Balance & hearing

Answer 3

CN VIII - VESTIBULOCOCHLEAR

Question 3

Swallowing & speaking

Answer 3

CN X - VAGUS

Question 4

Tongue movement / tongue strength

Answer 4

CN XII - HYPOGLOSSAL