Parts Of The Eye Quiz Questions And Answers
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What is the main purpose of the pupil?
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A black hole to dump garbage in.
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Block bugs from getting to your brain.
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Send electrical signals to your brain.
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Shrinks or grows to allow light into your eye.
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If you're on the hunt for some eye quiz questions and answers, you've come to the right place. We're about to jump into a quiz that's all about those incredible organs of vision – our eyes. Eyes are like our personal windows to the world, letting us see all the cool stuff around us. In this quiz, we're going to See moreexplore some super interesting facts about eyes.
Ever wonder why some people have blue eyes and others have brown? Or how about why we blink? Maybe you're curious about what part of the eye actually captures the images we see? Well, you're in luck because this quiz is going to cover all that and more. It's going to be a blast, and you'll walk away knowing a ton more about how your eyes work.
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- 2.
The iris is behind the cornea.
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True
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False
Correct Answer
A. TrueExplanation
The iris is indeed located behind the cornea. The cornea is the clear, outermost layer of the eye, while the iris is the colored part of the eye that controls the size of the pupil. The iris is positioned behind the cornea and in front of the lens, helping to regulate the amount of light entering the eye.Rate this question:
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- 3.
The sclera is the transparent front part of the eye that covers the iris and the pupil.
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True
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False
Correct Answer
A. FalseExplanation
The sclera is not the transparent front part of the eye; that description belongs to the cornea. The sclera is actually the white, opaque part of the eye. Its main function is to provide structure, protection, and support to the eye. The cornea, on the other hand, is the clear, dome-shaped surface that covers the front of the eye, including the iris and pupil, and plays a crucial role in focusing incoming light onto the retina.Rate this question:
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- 4.
The optic nerve is the part of the eye that can be irritating or bothersome.
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True
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False
Correct Answer
A. FalseExplanation
The statement "The optic nerve is the part of the eye that gets on the nerves" is false. The optic nerve is actually the part of the eye that transmits visual information from the retina to the brain. It is responsible for carrying the electrical signals generated by the photoreceptor cells in the retina to the visual cortex in the brain, where the signals are processed and interpreted as visual images.Rate this question:
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- 5.
What is the best definition of the retina?
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An outermost part of the eye that sees things.
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The innermost part of the eye absorbs light and changes it into electrical signals.
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The light switch to the brain.
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The clear, tough tissue covering the front of the eye.
Correct Answer
A. The innermost part of the eye absorbs light and changes it into electrical signals.Explanation
The best definition of the retina is the innermost part of the eye that absorbs light and changes it into electrical signals. The retina contains specialized cells called photoreceptors that detect light and convert it into electrical impulses that can be processed by the brain. These electrical signals are then transmitted to the brain through the optic nerve, allowing us to perceive visual information. This definition accurately describes the function and location of the retina in the eye.Rate this question:
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- 6.
The optic nerve sends electrical signals to the ________.
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Brain
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Muscles
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Lungs
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None of the above
Correct Answer
A. BrainExplanation
The optic nerve is responsible for transmitting electrical signals from the eyes to the brain. These signals contain visual information that is processed by the brain, allowing us to see and interpret the world around us. Therefore, the correct answer is brain.Rate this question:
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- 7.
Which part of the eye does 20% of the focusing?
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Lens
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Pupil
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Retina
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Iris
Correct Answer
A. LensExplanation
The lens of the eye is responsible for focusing light onto the retina, which is the part of the eye that detects light and sends signals to the brain for visual processing. The lens can adjust its shape to change the focal length and bring objects into focus. Therefore, it can be said that the lens does 20% of the focusing in the eye.Rate this question:
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- 8.
The pupil _______ in bright light.
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Expands
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Shrinks
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Blinks
Correct Answer
A. ShrinksExplanation
In bright light, the pupil naturally shrinks. This is because the iris, which controls the size of the pupil, contracts in response to the excess light entering the eye. By shrinking the pupil, the iris helps to regulate the amount of light that reaches the retina, preventing it from being overwhelmed by the brightness.Rate this question:
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- 9.
What is the best definition of the iris?
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The white part of the eyeball.
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The liquid inside the eyeball.
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The eyelid that covers the eye.
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The colored part of the eye is under the cornea.
Correct Answer
A. The colored part of the eye is under the cornea.Explanation
The iris is the colored part of the eye that is located under the cornea. It is responsible for controlling the size of the pupil and thus regulating the amount of light that enters the eye. The iris contains pigments that give the eye its specific color and can vary in color from person to person.Rate this question:
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- 10.
The retina absorbs light and changes it into electrical signals. Is this statement correct?
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Yes
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No
Correct Answer
A. YesExplanation
The statement is correct. The retina is a layer of tissue located at the back of the eye that contains specialized cells called photoreceptors. These photoreceptors, known as rods and cones, are responsible for absorbing light and converting it into electrical signals. These signals are then transmitted to the brain through the optic nerve, allowing us to perceive and interpret visual information.Rate this question:
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- 11.
The cornea does ________ percent of the focusing of images.
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60%
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80%
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55%
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75%
Correct Answer
A. 80%Explanation
The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber. It plays a crucial role in focusing light onto the retina at the back of the eye. The cornea is responsible for about 80% of the focusing of images onto the retina. This is because it has a curved shape that helps to bend and refract light as it enters the eye, allowing for clear vision.Rate this question:
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- 12.
If you scratch your eye, you probably scratch the cornea. True or false?
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True
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False
Correct Answer
A. TrueExplanation
When you scratch your eye, it is likely that you are scratching the cornea. The cornea is the clear, protective outer layer of the eye that covers the iris and the pupil. Scratching the cornea can cause discomfort, redness, and blurred vision. It is important to seek medical attention if you suspect that you have scratched your cornea, as it can lead to further complications if left untreated.Rate this question:
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Quiz Review Timeline (Updated): Jun 28, 2024 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Jun 28, 2024Quiz Edited by
ProProfs Editorial Team -
Sep 07, 2010Quiz Created by
April Donohoo
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