Cranial Openings

Question 1

Cribiform plate

Answer 1

(ant. Cranial fossa/nasal cavity)
Olfactory Nerve (I)

Question 2

Optic Canal

Answer 2

(mid. Cranial fossa/orbit)
Optic nerve (II)
Ophthalmic artery

Question 3

Superior Orbital Fissure

Answer 3

(mid cranial fossa/orbit)
Oculomotor Nerve (III)
Trochlear nerve (IV)
V1 ophthalmic division of trigeminal nerve (V)
Abducent nerve (VI)
Superior ophthalmic vein

Question 4

Foramen Rotundum

Answer 4

(mid cranial fossa/pterygopalatine fossa)
V2 maxillary division Trigeminal nerve (V)

Question 5

Foramen Lacerum

Answer 5

Filled w/cartilage in life

Question 6

Carotid Canal

Answer 6

(mid cranial fossa/neck)
Internal carotid artery

Question 7

Foramen Ovale

Answer 7

(mid cranial fossa/infratemporal fossa)
V3 mandibular division of trigeminal nerve (V)

Question 8

Foramen Spinosum

Answer 8

(mid cranial fossa/infratemproal fossa)
Middle meningeal artery

Question 9

Internal Acoustic Meatus

Answer 9

(post cranial fossa/ear & neck bia stylomastoid foramen)
Facial nerve (VII)
Vestibucochlear nerve (VIII)
Labyrinthine artery & vein
Jugular Foramen

Question 10

Jugular Foramen

Answer 10

(post cranial fossa/neck)
Glossopharyngeal nerve (IX)
Vagus Nerve (X)
Accessory Nerve (XI)
Internal jugular vein

Question 11

Hypoglossal Canal

Answer 11

(posterior cranial fossa/neck)
Hypoglossal nerve (XII)

Question 12

Foramen Magnum

Answer 12

(post cranial fossa/neck)
Spinal Cord
Vertebral arteries
Roots of accessory nerve (XI) pass up into cranial cavity & exit jugular foramen