Asked by Damario Thompson on Jul 28, 2024
Verified
The iris is a colored muscle that adjusts the size of the
A) blind spot.
B) cornea.
C) pupil.
D) lens.
Iris
The colored part of the eye surrounding the pupil, which adjusts the size of the pupil to regulate the amount of light entering the eye.
Pupil
The central, circular opening in the iris of the eye, which regulates the amount of light that enters the eye to reach the retina.
- Elucidate the physiological mechanisms behind pupil enlargement and reduction.
Verified Answer
VZ
Vincent ZhuangAug 02, 2024
Final Answer :
C
Explanation :
The iris is responsible for controlling the size of the pupil, which is the opening through which light enters the eye. The size of the pupil regulates the amount of light that enters the eye and reaches the retina. The iris is made up of muscles that contract or relax depending on the amount of light entering the eye. Therefore, the iris does not affect the cornea, lens or blind spot.
Learning Objectives
- Elucidate the physiological mechanisms behind pupil enlargement and reduction.
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