Question
Download Solution PDFThe amount of light entering the eye is controlled by the ________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Pupil.Key Points
- The amount of light entering the eye is controlled by the pupil.
- The pupil is a small empty space surrounded by the iris.
- The iris contracts and relaxes to regulate the size of the pupil.
- When it is dark, the pupil expands to allows more light to enter the eye.
- Iris controls the pupil which inturn controls the amount of light entering the eye.The pupil is just an adjustable opening, the iris is a membrane.
- When it is bright, the pupil contracts to prevent more light from entering the eye.
|
Sclera |
It maintains the shape of an eyeball and provides a sturdy attachment for the extraocular muscle that controls the movement of the eyes. |
|
Cornea |
It acts as the eye’s outermost lens. |
|
Retina |
It receives light and sends signals to the brain for visual recognition. |
Last updated on Jul 18, 2025
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