Welcome to the Quiz!
This quiz contains 15 questions from a mix of 1 subtopics.
What is the cornea?
The gap through which light passes to reach the lens
A transparent layer at the front of the eye which refracts light
The coloured part of the eye
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The diagram above shows the labelled as 'X'.
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What is the structure labelled X in the image above?
Iris
Retina
Cornea
Ciliary muscle
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What is the pupil?
The coloured part of the eye
The gap through which light passes to reach the lens
A transparent layer at the front of the eye which refracts light
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What is the structure labelled X in the image above?
Optic nerve
Ciliary muscle
Lens
Suspensory ligament
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What are the names of the two types of receptor cells in the retina?
Rod cells
Prism cells
Cube cells
Cone cells
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Which light-sensitive cells in the retina enable you to see in colour?
Cone cells
Rod cells
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The eye is a sense organ. Which two stimuli are the receptor cells of the eye sensitive to?
Colour
Light intensity
Temperature
Vibration
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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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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.
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What is the purpose of the iris reflex?
To focus on light from different distances
To ensure the optimum amount of light enters the eye
To prevent dust from entering the eye
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When the pupil is very large, do we describe it as 'constricted' or 'dilated'?
Dilated
Constricted
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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 contracts
The radial muscle contracts
The circular muscle relaxes
The radial muscle relaxes
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