Cranial Fossa

Question 1

Optic Canal

Answer 1

CN II (optic) and opthalmic artery (1st branch off int. carotid)

Question 2

Foramen Ovale

Answer 2

CN V3 (Mandibular)

Question 2

Foramen Magnum

Answer 2

CN 11 (Accessory) and vertebral arteries enter cranial cavity; medulla oblongata becomes continuous with spinal cord

Question 3

Foramen Rotundum

Answer 3

CN V2 (Maxillary)

Question 3

Hypoglossal Canal

Answer 3

CN 12 (Hypoglossal)

Question 4

Middle Fossa

Answer 4

Posterior Wall: Petrous Crest of temporal bone Contents: Temporal lobe and pituitary gland

Question 5

Anterior Fossa

Answer 5

Posterior Wall: Lesser wing of sphenoid bone Contents: Frontal Lobes

Question 7

Posterior Fossa

Answer 7

Contains brainstem, occipital lobes and cerebellum

Question 10

Jugular Foramen

Answer 10

CN 9 (Glossopharyngeal), CN 10 (Vagus), and CN 11 (Accessory); Also Internal Jugular Vein

Question 11

Foramen Spinosum

Answer 11

MIddle Meningeal artery and nerve

Question 11

Foramen Lacerum

Answer 11

Internal carotid artery passes over it (not through) as it enters cranial vault

Question 12

Cribiform plate of the ehtmoid bone

Answer 12

CN I : Olfactory (To olfactory bulb)

Question 13

Internal Acoustic Meatus

Answer 13

CN 7 (Facial) and CN 8 (vestibulocochlear)

Question 14

Superior Orbital Fissure

Answer 14

CN 3 (Oculomotor, 4 (trochlear), V1 (opthalmic), and 6 (abducent); also opthalmic veins