Major Foramina

Question 1

cribiform plate

Answer 1

CN I, olfactory nerve

Question 2

optic foramen

Answer 2

CN II optic nerve, opthalmic arteries

Question 3

superior orbital fissure

Answer 3

CN III oculomotor, V1 of trigeminal, CN IV trochlear, CN VI abducens

Question 4

foramen rotundum

Answer 4

CN V2 (maxillary)

Question 5

foramen ovale

Answer 5

CN V3 (mandibular), accessory meningeal artery

Question 6

foramen spinosum

Answer 6

CN V3 meningeal br, middle meningeal artery and vein

Question 7

foramen lacerum

Answer 7

meningeal arterial branches, deep petrosal nerve

Question 8

carotid canal

Answer 8

internal carotid artery

Question 9

internal acoustic meatus

Answer 9

CN VII facial nerve, CN VIII vestibulocochlear, labyrinthine artery

Question 10

jugular foramen

Answer 10

CN IX glossopharyngeal, CN X vagus, CN XI spinal accessory nerve, superior bulb of internal jugular vein

Question 11

hypoglossal canal

Answer 11

CN XII hypoglossal nerve

Question 12

foramen magnum

Answer 12

CN XI spinal accessory, spinal cord, vertebral arteries