Intermediate Superior Orbital Fissure Quiz

Q1. Which V1 branch passes through the superior orbital fissure outside the common tendinous ring?

• Nasociliary nerve
• Abducens nerve
• Lacrimal nerve
• Inferior division of CN III

Q2. Which V1 branch also passes through the superior orbital fissure outside the common tendinous ring?

• Optic nerve
• Nasociliary nerve
• Infraorbital nerve
• Frontal nerve

Q3. Which V1 branch passes through the common tendinous ring at the superior orbital fissure?

• Lacrimal nerve
• Zygomatic nerve
• Nasociliary nerve
• Frontal nerve

Q4. Which cranial nerve passes through the superior orbital fissure outside the common tendinous ring?

• Inferior division of CN III
• Trochlear nerve, CN IV
• Nasociliary nerve
• Abducens nerve, CN VI

Q5. Which structures pass through the superior orbital fissure within the common tendinous ring?

• CN IV, frontal nerve, and lacrimal nerve
• CN III divisions, nasociliary nerve, and CN VI
• CN II, CN VII, and CN VIII
• V2, V3, and CN XII

Q6. What is another name for the common tendinous ring?

• Spiral ligament
• Annulus of Zinn
• Pterygomandibular raphe
• Circle of Willis

Q7. Which extraocular muscles arise from the common tendinous ring?

• Levator palpebrae superioris only
• The four rectus muscles
• Orbicularis oculi
• The two oblique muscles only

Q8. Which venous sinus lies posterior to the superior orbital fissure and receives ophthalmic venous drainage?

• Straight sinus
• Sigmoid sinus
• Cavernous sinus
• Superior sagittal sinus

Q9. Which cranial nerves travel in the lateral wall of the cavernous sinus before reaching the superior orbital fissure?

• CN IX, CN X, CN XI, and CN XII
• CN III, CN IV, V1, and V2
• CN II, CN VI, CN VII, and CN VIII
• CN I, CN II, V3, and CN VII

Q10. Which nerve runs beside the internal carotid artery within the cavernous sinus before entering the superior orbital fissure?

• Abducens nerve, CN VI
• Optic nerve, CN II
• Frontal nerve
• Trochlear nerve, CN IV