ophthalmology

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1
1. What is the outermost layer of the lens?
Capsule
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2. What type of collagen is found in the lens capsule?
Type IV collagen
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3. Where is the lens capsule thinnest?
Posterior pole
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4. Where is the lens capsule thickest?
Posterior pre-equatorial zone
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5. What are the two types of cells found in the anterior epithelium?
A cells and B cells
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6. What is the function of A cells in the anterior epithelium?
Metabolism
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7. What is the role of B cells in the anterior epithelium?
Form new lens fibers through mitosis
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8. What happens to posterior epithelial cells during embryogenesis?
They elongate to form Primary lens fibers
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9. Where are the young lens fibers located?
Outer cortex
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10. How many zones are there in the nucleus of the lens?
Four zones
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