CN and vessel skull pathways

Question 1

Optic Canal

Answer 1

CN II, opthalmic artery, central retinal vein

Question 2

Superior Orbital Fissure

Answer 2

CN III, IV, V1, VI, opthalmic vein, sympathetic fibers

Question 3

Inferior Orbital fissure

Answer 3

Maxillary division of CN V2, inferior orbital vessels, and sphenopalatine ganglion

Question 4

Foramen Rotundum

Answer 4

CN V2 (first passes through inferorbital fissure)

Question 5

Foramen Ovale

Answer 5

CN V3

emmissary veins, lesser petrosal nerve, accessory meningeal artery

Question 6

Foramen spinosum

Answer 6

Middle meningeal artery

Meningeal recurrent branch of V3

Question 7

Foramen Lacerum

Answer 7

occluded by cartilage

Question 8

Internal auditory meatus

Answer 8

CN VII, VIII

Question 9

Jugular foramen

Answer 9

CN IX, X, XI, jugular vein

inferior petrosal and sigmoid sinuses

Question 10

Hypoglossal canal

Answer 10

CN XII

Question 11

Foramen Magnum

Answer 11

Spinal roots of CN XI, brain stem, vertebral arteries

Question 12

Cavernous Sinus

Answer 12

Blood from eye and superficial cortex to cavernous sinus to internal jugular vein

CN III, IV, V1, V2 and VI and postganglionic sympathetic fibers of superior cervical ganaglion past through here

Question 13

Cirbriform plate

Answer 13

CN I