Quiz

Quiz: Pupil Dilation and Contraction Mechanism

Pearson Edexcel Level 3 Advanced GCE in Biology A (Salters-Nuffield) (9BN0)

11 Steps9 Questions

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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!

Multiple ChoiceInteractive

What part of the eye controls the size of the pupil?

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Multi-SelectInteractive

Which of the following are correct about pupil dilation? (Select all that apply)

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Fill in the BlankInteractive

In bright light, the pupil becomes smaller due to the contraction of {{blank0}} muscles in the iris.

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Multiple ChoiceInteractive

What type of neurones stimulate the radial muscles to contract during pupil dilation?

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Math EquationInteractive

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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Multi-SelectInteractive

Which of the following are true about the pupil's response to light? (Select all that apply)

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typedAnswer

Match the items on the left with their correct pairs on the right

Fill in the BlankInteractive

The nervous system controls pupil size through the {{blank0}} and {{blank1}} branches.

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MatchingInteractive

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