Term
| What prevents the eye from drying out? |
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Definition
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Term
| What drains lacrimal secretions or tears? |
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Definition
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Term
| What contains mucus, antibodies, antibacterial lysozyme, and cleanses/ protects the eye? |
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Definition
| Lacrimal secretions (tears) |
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Term
| List what the extrinsic eye muscles allow the eye to do. |
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Definition
-follow moving objects
-maintain shape of eyeball
-hold it in orbit |
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Term
| T or F: The extrinsic eye muscles are among most precisely and rapidly controlled skeletal muscles. |
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Definition
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Term
| What does the fibrous layer of the eye contain? |
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Definition
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Term
| What part of the eye is white and opaque and anchors extrinsic eye muscles? |
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Definition
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Term
| What part of the eye can be transplanted with no fear of rejection? Why? |
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Definition
| Cornea; because it has no blood vessels. So the immune system can't get to it. |
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Term
| What is the most exposed part of the eye? |
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Definition
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Term
| What is another name for the vascular layer? |
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Definition
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Term
| What does the choroid do? |
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Definition
provides nutrition to all layers
helps absorb light |
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Term
| What controls the shape of the lens? |
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Definition
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Term
| What part of the eye lies between the cornea and the lens? |
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Definition
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Term
| What allows light to enter the eye? |
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Definition
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Term
| What type of cells store vitamin A and acts as phagocytes to remove dead/ damaged cells? |
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Definition
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Term
| What layer of retina plays a direct role in vision? |
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Definition
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Term
| What part of the neural layer contains only cones? |
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Definition
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Term
| What is the yellow area near the center of the retina? |
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Definition
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Term
| What are dim light receptors that provide no color vision? |
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Definition
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Term
| T or F:Cones are more numerous than rods. |
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Definition
| False, rods are more numerous |
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Term
| What provide color vision and function in bright light? |
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Definition
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Term
| What form the optic nerve? |
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Definition
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Term
| What causes the blind spot? |
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Definition
| Optic nerve exiting through the optic disc |
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Term
| T or F: The lens can change shape. |
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Definition
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Term
| What part of the eye is transparent and avascular? |
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Definition
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Term
| T or F: the lens is vascular |
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Definition
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Term
| What forms the bulk of the lens? |
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Definition
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Term
| Does the lens become more or less elastic throughout your lifetime? |
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Definition
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Term
| What lens converges light? |
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Definition
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Term
| What lens disperses light? |
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Definition
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Term
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Definition
When it passes from one medium to another
When it strikes a curved surface |
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Term
| In what order does light pass through the eye? |
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Definition
| Cornea, aqueous humor, lens, vitreous humor, entire neural layer of the retina, photoreceptors |
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Term
| How many times is light bent? and where |
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Definition
| 3, entering cornea, entering lens, leaving cornea |
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Term
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Definition
| Nearsightedness, distant objects focused in front of the retina |
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Term
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Definition
| farsightedness, light rays focus behind the retina |
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Term
| What is the function of the auricle? |
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Definition
| Funnels sound waves into the external auditory canal |
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Term
| What is the function of the external acoustic meatus? |
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Definition
| Lined with sebaceous glands and ceruminous glands. |
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Term
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Definition
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Term
| What is another name for the internal ear? |
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Definition
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