Foramina and canals of cranial base superior view netter 13

Question 1

foramen cecum

Answer 1

emissary vein to superior sagittal sinus

Question 2

nasal slit and anterior ethmoidal foramen

Answer 2

anterior ethmoidal VAN

Question 3

foramina of cribriform plate

Answer 3

olfactory nerves

Question 4

posterior ethmoidal foramen

Answer 4

posterior ethmoidal VAN

Question 5

optic canal

Answer 5

Optic nerve (CN II), ophthalmic artery

Question 6

superior orbital fissure

Answer 6

oculomotor (CN III), trochlear (CN IV), lacrimal/frontal/and nasociliary branches of ophthalmic nerve (V1), abducent nerve (CNVI), superior ophthalmic vein

Question 7

foramen rotundum

Answer 7

maxillary nerve V2

Question 8

foramen ovale

Answer 8

mandibular nerve V3, accessory meningeal artery, lesser petrosal nerve

Question 9

foramen spinosum

Answer 9

middle meningeal artery and vein, meningeal branch of mandibular nerve

Question 10

foramen lacerum

Answer 10

greater petrosal nerve

Question 11

carotid canal

Answer 11

internal carotid artery and nerve plexus

Question 12

hiatus for (the lateral one)

Answer 12

lesser petrosal nerve

Question 13

hiatus for (the medial one)

Answer 13

greater petrosal nerve

Question 14

internal acoustic meatus

Answer 14

facial nerve CN VII, Vestibulocochlear CN VIII, labyrinthine artery

Question 15

opening of vestibular aqueduct

Answer 15

endolymphatic duct

Question 16

mastoid foramen

Answer 16

emissary vein and occasionally a branch of occipital artery

Question 17

jugular foramen

Answer 17

inferior petrosal sinus, glossopharyngeal (CN IX), vagus (CN X), accessory (CNXI), sigmoid sinus, posterior meningeal artery

Question 18

condylar canal

Answer 18

emissary vein and meningeal branch of ascending pharyngeal artery

Question 19

hypoglossal canal

Answer 19

hypoglossal (CN XII)

Question 20

foramen magnum

Answer 20

medulla, meninges, vertebral arteries, meningeal arteries of vertebral arteries, spinal roots of accessory nerves