The Human Nervous System (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of organ is the eye?
What type of organ is the eye?
A sense organ
What is the function of the cornea?
What is the function of the cornea?
The clear front part that light enters first
Which structure contains the light-detecting receptor cells?
Which structure contains the light-detecting receptor cells?
Retina
What does the optic nerve do?
What does the optic nerve do?
Carries electrical signals to the brain
What is the correct pathway of light through the eye?
What is the correct pathway of light through the eye?
Cornea → pupil → lens → retina
Which receptor cells work in dim light?
Which receptor cells work in dim light?
Rods
What do cone cells detect?
What do cone cells detect?
Different colours in bright light
What does accommodation mean?
What does accommodation mean?
Changing lens shape to focus
When focusing on near objects, what happens to the lens?
When focusing on near objects, what happens to the lens?
It becomes thicker
What do ciliary muscles do when focusing on distant objects?
What do ciliary muscles do when focusing on distant objects?
Relax
In bright light, what happens to the circular muscles in the iris?
In bright light, what happens to the circular muscles in the iris?
They contract
What happens to the pupil in dim light?
What happens to the pupil in dim light?
It gets larger (dilates)