Welcome to the Quiz!

This quiz contains 15 questions from a mix of 1 subtopics.

What is the cornea? 

A transparent layer at the front of the eye which refracts light

The gap through which light passes to reach the lens

The coloured part of the eye

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Diagram showing the structure of the eye with a labelled part marked as X.

The diagram above shows the labelled as 'X'.

optic
nerve

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Diagram of the eye structure with a label X indicating a specific part.

What is the structure labelled X in the image above?

Ciliary muscle 

Cornea 

Iris

Retina

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What is the pupil? 

A transparent layer at the front of the eye which refracts light

The coloured part of the eye

The gap through which light passes to reach the lens

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Diagram of the eye with the structure labelled X highlighted.

What is the structure labelled X in the image above?

Ciliary muscle 

Lens

Suspensory ligament 

Optic nerve

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What are the names of the two types of receptor cells in the retina? 

Prism cells 

Rod cells

Cone cells 

Cube cells 

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Which light-sensitive cells in the retina enable you to see in colour?

Rod cells

Cone cells

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Illustration of the structure of the eye showing the iris and pupil.

The eye is a sense organ. Which two stimuli are the receptor cells of the eye sensitive to?

Colour 

Light intensity 

Vibration

Temperature 

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Which light sensitive cells in the retina enable you to see in the dark?

Rod cells

Cone cells

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Diagram showing the structure of the eye with a focus on the retina.

The point where light focuses on the retina is called the . This region contains the highest concentration of cone cells and gives the sharpest image. 

fovea

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What is the purpose of the iris reflex?

To ensure the optimum amount of light enters the eye

To prevent dust from entering the eye

To focus on light from different distances 

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Illustration showing a comparison between a constricted pupil and a dilated pupil.

When the pupil is very large, do we describe it as 'constricted' or 'dilated'? 

Constricted 

Dilated 

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Which two muscles make up the iris? 

Radial muscles 

Round muscles 

Linear muscles 

Circular muscles 

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When the eye is exposed to bright light, will the pupil constrict or dilate?

Constrict 

Dilate

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What happens to the circular and radial muscles when the pupil constricts?

(Select all that apply)

The circular muscle relaxes 

The circular muscle contracts 

The radial muscle contracts 

The radial muscle relaxes 

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