Nerves of the Orbit

Question 1

By what opening does the optic nerve enter the orbit?

Answer 1

optic canal

Question 2

By what opening does the oculomotor nerve enter the orbit?

Answer 2

superior orbital fissure

Question 3

By what opening does the trochlear nerve enter the orbit?

Answer 3

superior orbital fissure

Question 4

By what opening does the abducent/abducens nerve enter the orbit?

Answer 4

superior orbital fissure

Question 5

By what opening does the ophthalmic division of trigeminal enter the orbit?

Answer 5

superior orbital fissure

Question 6

By what opening does the maxillary division of trigeminal enter the orbit?

Answer 6

inferior orbital fissure

Question 7

What are the primary branches of the ophthalmic division of the trigeminal nerve?

Answer 7

• frontal
• lacrimal
• nasociliary

Question 8

Which branches of the frontal nerve supply the scalp?

Answer 8

• supraoribtal

- supratrochlear

Question 9

Which branches of the nasociliary nerve will exit the medial wall of the orbit?

Answer 9

• anterior ethmoidal nerve

- posterior ethmoidal nerve

Question 10

What openings will the maxillary nerve pass through to supply the cheek?

Answer 10

• foramen rotundum
• inferior orbital fissure
• infraorbital foramen

Question 11

What provides the major distribution vehicle for sympathetics to the head?

Answer 11

arteries

Question 12

Neurovascular sympathetic plexuses are associated with which vessels?

Answer 12

ophthalmic artery and its branches