Intermediate Sclera Quiz

Q1. Which layer forms the outermost vascular connective tissue covering of the sclera?

• Lamina fusca
• Episclera
• Choroid
• Retinal pigment epithelium

Q2. Which layer forms the main thickness of the sclera?

• Scleral stroma
• Episclera only
• Lamina fusca only
• Conjunctival epithelium

Q3. What is the lamina fusca?

• The transparent anterior corneal layer
• The capsule surrounding the lens
• The retinal nerve fiber layer
• The pigmented inner scleral layer adjacent to the choroid

Q4. Why is the sclera less transparent than the cornea?

• Its collagen is irregularly arranged and scatters light
• It is filled with aqueous humor
• It contains photoreceptors that absorb all light
• Its fibers are arranged in perfectly regular lamellae

Q5. What is the lamina cribrosa?

• A perforated posterior scleral region traversed by optic nerve axons
• A ligament suspending the lens
• A membrane covering the pupil
• A layer between the corneal epithelium and stroma

Q6. Which vessels perforate the sclera posteriorly to supply the choroid and related structures?

• Middle meningeal arteries
• Facial arteries
• Superficial temporal arteries
• Posterior ciliary arteries

Q7. Which nerves pierce the sclera and travel within the suprachoroidal region toward anterior ocular structures?

• Greater occipital nerves
• Facial nerve trunk
• Chorda tympani
• Ciliary nerves

Q8. Where is the sclera generally thinnest?

• At the iris root
• Just posterior to the rectus muscle insertions
• At the optic disc only
• At the center of the cornea

Q9. What connective tissue type predominates in the scleral stroma?

• Elastic cartilage
• Hyaline cartilage
• Reticular epithelium
• Dense irregular connective tissue

Q10. What separates the sclera from the choroid over much of the globe?

• Subarachnoid space of the brain
• Anterior chamber
• Suprachoroidal space
• Vitreous chamber