Multiple Choice
Which of the following correctly traces the path of light into your eyes?
46. Sensory Systems
Sensory System
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Which of the following occurs when you move from a bright area into a darkened room?
A
Rods and cones hyperpolarize.
B
The size of the pupil decreases.
C
The lens focuses light off the cones and onto the rods.
D
The lens becomes more spherical.
E
The iris dilates, increasing the size of the pupil.
Verified step by step guidance1
Understand the function of the iris and pupil in the eye. The iris is a muscle that controls the size of the pupil, which regulates the amount of light entering the eye.
Recognize the role of rods and cones in vision. Rods are responsible for vision in low light conditions, while cones are active in bright light and color vision.
Consider the physiological response when moving from a bright area to a darkened room. The eye needs to adjust to allow more light to enter, which involves changes in the pupil size.
Identify the correct response of the eye in low light conditions. The iris dilates, increasing the size of the pupil to allow more light to reach the retina, enhancing vision in the dark.
Eliminate incorrect options based on the understanding of eye anatomy and function. Hyperpolarization of rods and cones, decrease in pupil size, and changes in lens shape are not the primary responses when adjusting to darkness.
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