Skull

Question 1

contents of optic canal

Answer 1

CNII and opthalmic artery

Question 2

contents of superior orbital fissure

Answer 2

V1 - opthalmic division of trigeminal nerve, III - oculomotor nerve, IV - trochlear nerve, VI - abducens nerve

Question 3

contents of foramen rotundum

Answer 3

V2 - maxillary division of trigeminal nerve

Question 4

contents of foramen ovale

Answer 4

V3 - mandibular division of trigeminal nerve

Question 5

contents of foramen spinosum

Answer 5

entrance for middle meningeal artery into skull

Question 6

contents of foramen lacerum

Answer 6

filled w/ fibrocartilage –> forms floor of carotid canal

Question 7

contents of internal auditory meatus

Answer 7

CNVII - facial, CNVIII - vestibulococlear

Question 8

contents of jugular foramen

Answer 8

CNIX - glossopharyngeal, CN X - vagus, CN XI - accessory

Question 9

contents of hypoglossal canal

Answer 9

CN XII - hypoglossal

Question 10

CN I

Answer 10

Olfactory nerve –> through cribiform plate

Question 11

CN II

Answer 11

Optic nerve (afferent neurons for sight) –> optic canal

Question 12

CN III

Answer 12

Oculomotor nerve ( motor innercation to some of the extra ocular muscles of eye + parasymp neurons for pupil changes) –> superior orbital fissure

Question 13

CN IV

Answer 13

Trochlear nerve (somatic innervation to superior oblique muscle - extraocular muscle of eye) – superior orbital fissure

Question 14

CN V

Answer 14

Trigeminal nerve

• CN V1 = opthalmic nerve –> superior orbital fissure
• CN V2 = maxillary nerve –> foramen rotundum
• CN V3 = mandibular nerve –> foramen ovale

Question 15

CN VI

Answer 15

Abducens nerve (somatic innervation to lateral rectus muscle - extraocular muscle of eye) –> superior orbital fissure

Question 16

CN VII

Answer 16

Facial nerve –> internal acoustic meatus

Question 17

CN VIII

Answer 17

Vestibulocochlear nerve –> internal acoustic meatus

Question 18

CN IX

Answer 18

Glossopharyngeal nerve –> jugular foramen

Question 19

CN X

Answer 19

Vagus nerve –> jugular foramen

Question 20

CN XI

Answer 20

Accessory nerve –> arises in brainstem, goes through jugular foramen

Question 21

CN XII

Answer 21

Hypoglossal nerve –> hypoglossal canal