The iris in the human eye contracts and expands, controlling the amount of light that reaches the retina. What types of muscle c ontrol this?
1 answer:
Answer:smooth and involuntary
Explanation:the sphincter papillae are muscles responsible for narrowing the pupil, while the dilator papillae makes the pupil larger. Both of them are smooth types of muscles, that are controlled by nerves, sending signals from the brain about the light conditions.
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