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Questions and Answers
What is the main component of Bowman’s membrane?
What is the main component of Bowman’s membrane?
- Rows of flat fibroblasts (Keratocytes)
- Thick, homogenous & acellular membrane
- Proteoglycan matrix
- Collagen fibrils in a matrix (correct)
What type of cells make up the basal layer of the corneal epithelium?
What type of cells make up the basal layer of the corneal epithelium?
- Cubical to columnar resting on straight B.M (correct)
- Polyhedral cells with unmyelinated free nerve endings
- Squamous cells with apical microvilli
- Cells with apical microvilli retaining tear film
What happens if Descemet’s membrane is destroyed?
What happens if Descemet’s membrane is destroyed?
- Enhanced collagen bundle formation
- Increased tear film retention
- Corneal opacity (correct)
- Reduced keratocyte activity
What is the function of the intermediate layer of the corneal epithelium?
What is the function of the intermediate layer of the corneal epithelium?
What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
Which layer of the eye consists of the cornea and sclera?
Which layer of the eye consists of the cornea and sclera?
What is the main function of Bowman’s membrane in the cornea?
What is the main function of Bowman’s membrane in the cornea?
What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
Which layer of the corneal epithelium retains the tear film over the surface of the cornea?
Which layer of the corneal epithelium retains the tear film over the surface of the cornea?
What is the regenerative capacity of the corneal epithelium's basal layer?
What is the regenerative capacity of the corneal epithelium's basal layer?
Flashcards
What is the main component of Bowman's membrane?
What is the main component of Bowman's membrane?
Collagen fibrils embedded in a matrix.
What type of cells make up the basal layer of the corneal epithelium?
What type of cells make up the basal layer of the corneal epithelium?
Cuboidal to columnar cells resting on a straight basement membrane.
What happens if Descemet's membrane is destroyed?
What happens if Descemet's membrane is destroyed?
Corneal opacity, or cloudiness, can occur.
What is the function of the intermediate layer of the corneal epithelium?
What is the function of the intermediate layer of the corneal epithelium?
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What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
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Which layer of the eye consists of the cornea and sclera?
Which layer of the eye consists of the cornea and sclera?
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What is the main function of Bowman's membrane in the cornea?
What is the main function of Bowman's membrane in the cornea?
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What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
What is the composition of the main bulk of the cornea (Substantia propria [Stroma])?
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Which layer of the corneal epithelium retains the tear film over the surface of the cornea?
Which layer of the corneal epithelium retains the tear film over the surface of the cornea?
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What is the regenerative capacity of the corneal epithelium's basal layer?
What is the regenerative capacity of the corneal epithelium's basal layer?
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Study Notes
Corneal Layers
- The main component of Bowman's membrane is a thin, acellular layer composed of type I and VII collagen fibrils.
Corneal Epithelium
- The basal layer of the corneal epithelium is made up of cuboidal or columnar cells.
- The intermediate layer of the corneal epithelium is primarily involved in cell migration and differentiation.
- The superficial layer of the corneal epithelium, which retains the tear film over the surface of the cornea, is composed of flat, squamous cells.
Corneal Stroma (Substantia Propria)
- The main bulk of the cornea is composed of the stroma, which is made up of approximately 78% water, 15% collagen, and 5% proteoglycans.
Ocular Anatomy
- The outermost layer of the eye consists of the cornea and sclera.
Bowman's Membrane
- Bowman's membrane serves as a barrier to prevent the spread of infections and inflammation.
- If Descemet's membrane is destroyed, it can lead to corneal edema and vision disturbances.
Corneal Epithelial Regeneration
- The basal layer of the corneal epithelium has a high regenerative capacity, allowing it to quickly replace damaged or dying cells.
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Description
Test your knowledge of the histological structure of the eye's special sense module with this study guide. Explore the three layers of the eye and their components, including the cornea, sclera, choroid, ciliary body, iris, and retina.
