COA Exam Study (JCAHPO) (Exam Review Qs&As)
levator palpebrae superioris - ANS-Muscle that elevates the lid
Sclera - ANS-white opaque fibrous shell, main purpose is to protect eye
Cornea - ANS-A transparent convex covering which protects the eye and helps focus light rays onto
the retina and t...
COA Exam S tudy (JCAHPO) (Exam Review Qs&As ) levator palpebrae superioris - ANS-✔✔ Muscle that elevates the lid Sclera - ANS-✔✔ white opaque fibrous shell, main purpose is to protect eye Cornea - ANS-✔✔ A transparent convex covering which protects the eye and helps focus light rays onto the retina and the back of the eye meibomian glands - ANS-✔✔ The largest oil -secreting glands , which are embedded in the posterior connective tissue substance of the lids Corneal Epithelium - ANS-✔✔ 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 stra tified squamous cells. Corneal Epithelium - ANS-✔✔ Part of the cornea that regenerates rapidly and heals without leaving a scar. Bowman's membrane - ANS-✔✔ Consists of randomly oriented collagen fibrils of greater periodicity then the underlaying stroma. Bowman's membrane - ANS-✔✔ Acellular layer of cornea that has no regenerative capabilities. Function is unclear. Stroma - ANS-✔✔ Layer just under Bowman's membrane. Accounts for 90% of corneal thickness and is composed of 78% water. Descemet's membrane - ANS-✔✔ Layer of the cornea that is composed of type III collagen, forms the basement membrane of epithelial cells.
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