COA exam study
levator palpebrae superioris - ✔✔ correct answer Muscle that elevates the lid
Sclera - ✔✔ correct answer white opaque fibrous shell, main purpose is to protect eye
Cornea - ✔✔ correct answer A transparent convex covering which protects the eye and helps focus
light rays onto the retina and the back of the eye
meibomian glands - ✔✔ correct answer The largest oil-secreting glands, which are embedded in the
posterior connective tissue substance of the lids
Corneal Epithelium - ✔✔ correct answer Part of the cornea that is usually injured by superficial
abrasions or small foreign bodies. Is 5-7 cells thick and is composed of nonkeratinized stratified
squamous cells.
Corneal Epithelium - ✔✔ correct answer Part of the cornea that regenerates rapidly and heals
without leaving a scar.
Bowman's membrane - ✔✔ correct answer Consists of randomly oriented collagen fibrils of greater
periodicity then the underlaying stroma.
Bowman's membrane - ✔✔ correct answer Acellular layer of cornea that has no regenerative
capabilities. Function is unclear.
Stroma - ✔✔ correct answer Layer just under Bowman's membrane. Accounts for 90% of corneal
thickness and is composed of 78% water.
Descemet's membrane - ✔✔ correct answer Layer of the cornea that is composed of type III
collagen, forms the basement membrane of epithelial cells.
Endothelium - ✔✔ correct answer 4-6um thick layer of the cornea made of 500,000 cells that
maintains corneal deturgescence. No regenerative abilities.
Limbus - ✔✔ correct answer The gray, semitransparent area which demarcates the junction of the
cornea and sclera.
levator palpebrae superioris - ✔✔ correct answer Muscle that elevates the lid
Sclera - ✔✔ correct answer white opaque fibrous shell, main purpose is to protect eye
Cornea - ✔✔ correct answer A transparent convex covering which protects the eye and helps focus
light rays onto the retina and the back of the eye
meibomian glands - ✔✔ correct answer The largest oil-secreting glands, which are embedded in the
posterior connective tissue substance of the lids
Corneal Epithelium - ✔✔ correct answer Part of the cornea that is usually injured by superficial
abrasions or small foreign bodies. Is 5-7 cells thick and is composed of nonkeratinized stratified
squamous cells.
Corneal Epithelium - ✔✔ correct answer Part of the cornea that regenerates rapidly and heals
without leaving a scar.
Bowman's membrane - ✔✔ correct answer Consists of randomly oriented collagen fibrils of greater
periodicity then the underlaying stroma.
Bowman's membrane - ✔✔ correct answer Acellular layer of cornea that has no regenerative
capabilities. Function is unclear.
Stroma - ✔✔ correct answer Layer just under Bowman's membrane. Accounts for 90% of corneal
thickness and is composed of 78% water.
Descemet's membrane - ✔✔ correct answer Layer of the cornea that is composed of type III
collagen, forms the basement membrane of epithelial cells.
Endothelium - ✔✔ correct answer 4-6um thick layer of the cornea made of 500,000 cells that
maintains corneal deturgescence. No regenerative abilities.
Limbus - ✔✔ correct answer The gray, semitransparent area which demarcates the junction of the
cornea and sclera.
