Questions and Answers
Label the structures of the eye.
Using the terms provided, label the image of the extrinsic muscles of the eye.
Using the terms provided, correctly label the structures that make up the lacrimal apparatus.
List, in correct order, the structures of the eye through which light passes to get to the retina.
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Which structure supports the retina to keep it flush against the back of the eye?
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The space between the cornea and the lens is filled with?
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A person with longer eyeballs is said to have myopia (or near sightedness). This means images held further away from the eye appear blurry because the point of focus is ______ the retina.
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What causes astigmatism?
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When the eye accommodates for near vision, the lens becomes more?
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The average near point of accommodation for a 20 year old is?
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The older we get the _______ the near point of accommodation moves.
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The decreased ability to accommodate for near vision is called?
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The part of the eye referred to as the blind spot lacks?
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Another name for the blind spot is the?
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When performing the blind spot demonstration in lab, what happens to part of the image as you move the card closer to the test subject's face?
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Match each part of the coronally cut eye with the number to label it.
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Match each part of the dissected eye with the number to label it.
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Match each part of the dissected eye to the number.
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Study Notes
Eye Structures and Functions
- The lacrimal apparatus is responsible for tear production and drainage, protecting the eye from debris.
- Light passes through several structures before reaching the retina: cornea, aqueous humor, pupil, lens, vitreous humor.
- The retina is supported by the vitreous humor, maintaining its position against the back of the eye.
Eye Conditions
- Myopia (nearsightedness) occurs when the eyeball is elongated, causing distant images to focus in front of the retina.
- Astigmatism is caused by abnormal curvature of the eye, leading to blurred or distorted vision at all distances.
- Presbyopia is the reduced ability to focus on near objects as a result of aging, with the near point of accommodation moving farther away.
Vision Adaptation
- Accommodation for near vision causes the lens to become more convex, allowing clearer focus on close objects.
- The average near point of accommodation for a 20-year-old is 10 cm, which increases with age.
Eye Anatomy
- The blind spot (optic disc) lacks rods and cones, resulting in no visual information being processed in that area.
- During the blind spot demonstration, part of the image disappears as it reaches the blind spot, illustrating its function.
Dissection and Identification
- Common parts of the eye identified in dissections include the iris, pupil, sclera, cornea, and lens.
- Understanding the anatomy and structure of the eye aids in identifying and labeling various components during practical examinations.
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Description
Test your knowledge on the structures of the eye and their functions with this collection of flashcards. You'll label important anatomical features, including the extrinsic muscles and the lacrimal apparatus, as well as the pathway of light to the retina. Perfect for AP biology students!
