Foramen and CNs

Question 1

Supraorbital foramen

Answer 1

Superior Orbital Nerve: branch of V1 (numbness)

Question 2

Infraorbital foramen

Answer 2

Inferior Orbital Nerve: branch of V2

Question 3

Mental foramen

Answer 3

Mental nerve and vessels: branch of V3 (numbness)

Question 4

Foramen magnum

Answer 4

Medulla, spinal dural membranes, CN XI and vertebral arteries.

Question 5

Jugular foramen

Answer 5

Jugular vein, CN IX, X and XI

Question 6

Hypoglossal foramen

Answer 6

CN XII and posterior meningeal artery

Question 7

Stylomastoid foramen

Answer 7

CN VII and stylomastoid artery

Question 8

Foramen rotundum

Answer 8

V2 (maxillary nerve)

Question 9

Foramen ovale

Answer 9

V3 (mandibular nerve)

Question 10

Foramen lacerum

Answer 10

Greater superficial petrosal nerve overlies foramen lacerum (not a hole, full of cartilage)

Question 11

Foramen spinosum

Answer 11

Middle meningeal artery

Question 12

Carotid canal

Answer 12

Internal carotid artery and sympathetic plexus to head

Question 13

Internal acoustic meatus

Answer 13

CN VII and VIII

Question 14

Superior orbital fissure

Answer 14

CN III, IV, VI and V1 (ophthalmic)

Question 15

Inferior orbital fissure

Answer 15

V2 (maxillary)