Foramina and Canals

Question 1

Foramen Cecum

Answer 1

emissary vein to superior sagittal sinus (just in front of cribiform plate/crista galli)

Question 2

Nasal slit / Anterior Ethmoidal foramen

Answer 2

anterior ethmoidal artery, vein, and nerve

Question 3

Foramen of Cribiform plate

Answer 3

Olfactory nerves

Question 4

Posterior Ethmoidal foramen

Answer 4

posterior ethmoidal artery, vein, and nerve

Question 5

Optic Canal (2)

Answer 5

Optic nerve, Ophthalmic artery

Question 6

Superior Orbital Fissure (4)

Answer 6

Oculomotor nerve, Trochlear nerve, ophthalmic branch of Trigeminal [specifically lacrimal, frontal, and nasociliary branches of V1], Ophthalmic vein + sympathetic fibers

Question 7

Foramen Rotundum

Answer 7

Maxillary nerve (V2)

Question 8

Foramen Ovale (3)

Answer 8

Mandibular nerve (V3), accessory meningeal artery, lesser petrosal nerve

Question 9

Foramen spinosum (3)

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 (2)

Answer 11

Internal carotid artery, internal carotid nerve plexus

Question 12

Internal Acoustic Meatus (3)

Answer 12

Facial nerve, Vestibulococchlear nerve, labyrinthine artery

Question 13

Jugular Foramen (7)

Answer 13

Glossopharyngeal nerve, Vagus nerve, Accessory nerve, Superior bulb of internal jugular vein, inferior petrosal sinus, sigmoid sinus, posterior meningeal artery

Question 14

Hypoglossal Canal

Answer 14

Hypoglossal nerve

Question 15

Foramen Magnum (5)

Answer 15

Medulla oblongata, meninges, vertebral arteries, meningeal branch of vertebral artery, spinal roots of accessory nerve

Question 16

Stylomastoid Foramen

Answer 16

Facial nerve

Question 17

Incisive fossa

Answer 17

Nasopalatine nerve, sphenopalatine vessels

Question 18

Infraoribtal fissure (3)

Answer 18

Infraorbital nerve, infraorbital branch of maxillary artery, inferior ophthalmic vein