COA EXAM STUDY (JCAHPO) 2023 REVIEW SOLUTION ACTUAL EXAM UPDATE
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Course
COA
Institution
COA
COA EXAM STUDY (JCAHPO) 2023 REVIEW SOLUTION ACTUAL EXAM UPDATE
levator palpebrae superioris
Muscle that elevates the lid
Sclera
white opaque fibrous shell, main purpose is to protect eye
Cornea
A transparent convex covering which protects the eye and helps focus light rays onto the retina ...
COA EXAM STUDY (JCAHPO) 2023 REVIEW
SOLUTION ACTUAL EXAM UPDATE
levator palpebrae superioris
Muscle that elevates the lid
Sclera
white opaque fibrous shell, main purpose is to protect eye
Cornea
A transparent convex covering which protects the eye and helps focus light rays onto
the retina and the back of the eye
meibomian glands
The largest oil-secreting glands, which are embedded in the posterior connective tissue
substance of the lids
Corneal Epithelium
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
Part of the cornea that regenerates rapidly and heals without leaving a scar.
Bowman's membrane
Consists of randomly oriented collagen fibrils of greater periodicity then the underlaying
stroma.
Bowman's membrane
Acellular layer of cornea that has no regenerative capabilities. Function is unclear.
Stroma
Layer just under Bowman's membrane. Accounts for 90% of corneal thickness and is
composed of 78% water.
Descemet's membrane
Layer of the cornea that is composed of type III collagen, forms the basement
membrane of epithelial cells.
Endothelium
4-6um thick layer of the cornea made of 500,000 cells that maintains corneal
deturgescence. No regenerative abilities.
Limbus
The gray, semitransparent area which demarcates the junction of the cornea and sclera.
Cornea is completely nourished by
3 sources: A plexus of fine capillaries at the limbus, the tear film, and the aqueous
humor.
Vitreous
jelly like structure, thick and viscous, that occupies the vitreous chamber in the posterior
concavity of the globe.
Lens
A transparent biconvex structure situated between the iris and the vitreous.
Iris
The most anterior structure of the uveal tract.
Uveal tract
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