Holes in the Skull

Question 1

cribriform plate of the ethmoid bone

Answer 1

CN I

Question 2

Optic canale

Answer 2

CN II, Ophthalmic artery

Question 3

Internal acoustic meatus

Answer 3

CN VII, CN VIII

Question 4

Superior orbital fissure

Answer 4

CN III, CN IV, CN VI, CN V/V1, superior ophthalmic veins

Question 5

foramen magnum

Answer 5

CN XI as it enters cranial cavity

Question 6

jugular foramen

Answer 6

CN XI (as it exits cranial cavity), CN IX, CN X

Question 7

hypoglossal canal

Answer 7

CN XII

Question 8

Stylomastoid foramen

Answer 8

somatic motor and somatic sensory branches of CN VII (external ear, n. to stylohyoid, n. to posterior belly of digastric, posterior auricular nerve)

Question 9

foramen rotundum

Answer 9

CN V/V2

Question 10

foramen ovale

Answer 10

O-otic ganglion 
V-V3 
A-accessory meningeal artery 
L-lesser petrosal nerve 
E-emissary veins

Question 11

foramen spinosum

Answer 11

middle meningeal artery, middle meningeal veins, meningeal branch of V3

Question 12

foramen lacerum

Answer 12

greater petrosal nerve

Question 13

carotid canal

Answer 13

internal carotid artery, internal carotid nerve plexus

Question 14

greater palatine foramen

Answer 14

greater palatine nerve, greater palatine artery

Question 15

incisive foramen

Answer 15

nasopalatine nerve, sphenopalatine artery

Question 16

Facial canal

Answer 16

CN VII, CN XII

Question 17

mandibular foramen

Answer 17

inferior alveolar nerve

Question 18

infraorbital foramen

Answer 18

infraorbital nerve

Question 19

supraorbital foramen

Answer 19

supraorbital nerve

Question 20

mental foramen

Answer 20

mental nerve and artery

Question 21

petrotympanic fissure

Answer 21

chorda tympani

Question 22

infraorbital groove

Answer 22

infraorbital vessels and nerves

Question 23

anterior ethmoidal/posterior ethmoidal foramina

Answer 23

a/p ethmoidal nerves from nasociliary

Question 24

Transverse foramina of C3-C7

Answer 24

vertebral artery and vein, sympathetic nerve plexus

Question 25

Sphenopalatine foramen

Answer 25

sphenopalatine artery, nasopalatine nerve, posterolateral nasal branches

Question 26

Pharyngeal canal

Answer 26

Pharyngeal nerve of V2

Question 27

Infraorbital fissure

Answer 27

Zygomatic nerve of V2, infraorbital nerve,

Question 28

Pterygomaxillary fissure

Answer 28

Posterior superior alveolar nerve