Cranial Nerve Exits

Question 1

CN I –Olfactory

Answer 1

Cribriform plate, ethmoid bone

Question 2

CNII –Optic

Answer 2

Optic canal, sphenoid bone

Question 3

CNIII –Oculomotor

Answer 3

Superior orbital fissure, sphenoid bone

Question 4

CNIV –Trochlear

Answer 4

Superior orbital fissure, sphenoid bone

Question 5

CNV1 –Ophthalmic

Answer 5

Superior orbital fissure, sphenoid bone

Question 6

CNV2 –Maxillary

Answer 6

Foramen rotundum, sphenoid bone

Question 7

CNV3 –Mandibular

Answer 7

Foramen ovale, sphenoid bone

Question 8

CNVI –Abducens

Answer 8

Superior orbital fissure, sphenoid bone

Question 9

CNVII –Facial

Answer 9

Internal acoustic meatus, temporal bone

Question 10

CNVIII –Vestibulocochlear

Answer 10

Internal acoustic meatus, temporal bone

Question 11

CNIX –Glossopharyngeal

Answer 11

Jugular foramen, between temporal and occipital bones

Question 12

CNX –Vagus

Answer 12

Jugular foramen, between temporal and occipital bones

Question 13

CNXI –Accessory

Answer 13

Jugular foramen, between temporal and occipital bones

Question 14

CNXII –Hypoglossal

Answer 14

Hypoglossal canal, occipital bone