Quiz: Pupil Dilation and Contraction Mechanism
Pearson Edexcel Level 3 Advanced GCE in Biology A (Salters-Nuffield) (9BN0)
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Building on what you've learned about sensory, relay, and motor neurones, let's explore how the pupil dilates and contracts in response to light!
What part of the eye controls the size of the pupil?
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Which of the following are correct about pupil dilation? (Select all that apply)
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In bright light, the pupil becomes smaller due to the contraction of {{blank0}} muscles in the iris.
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Match the items on the left with their correct pairs on the right
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What type of neurones stimulate the radial muscles to contract during pupil dilation?
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If the pupil diameter in dim light is 8 mm and in bright light it reduces to 4 mm, what is the change in radius?
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Which of the following are true about the pupil's response to light? (Select all that apply)
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The nervous system controls pupil size through the {{blank0}} and {{blank1}} branches.
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