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WorksheetsChapter 13 - sense organ /eye/
Total questions: 21
Worksheet time: 16mins
It is the transparent, curved front of the eye which helps to converge the light rays which enter the eye
Retina
Cornea
Sclera
Pupil
Is a hole in the middle of the iris where light is allowed to continue its passage. In bright light it is constricted and in dim light it is dilated
Cornea
Iris
Pupil
Fovea
In which layer of the eye are the light receptor cells found?
(a)
Which of these structures perform refraction? /Choose two answers/
cornea
lens
pupil
ciliary muscles
function of iris /choose two answers/
adjusting the light entering the eye
allow light to enter
allow eye hydration
changing the size of pupil
How does light affect the pupil?
The pupil gets larger as light decreases
The pupil gets larger as light increases
The pupil's color depends on the amount of light
The pupil isn't affected by light
Which structure is represented by the letter "B"?
Cornea
Retina
Pupil
Iris
Which structure is represented by the letter "A"?
Cornea
Sclera
Lens
Iris
Which structure is represented by the letter "C"?
Optic Nerve
Pupil
Lens
Iris
Which structure is represented by the letter "H"?
Optic Nerve
Sclera
Cornea
Blind Spot
Which structure is represented by the letter "E"?
Sclera
Lens
Optic Nerve
Retina
Which structure converts light waves to electrical signals that the brain uses to understand what it is seeing?
Lens
Sclera
Retina
Iris
Which structure carries the electrical signals from retina to the brain?
Optic Nerve
Sclera
Blind Spot
Pupil
It lets light enter the eye
iris
retina
pupil
It controls the amount of light that enters the pupil.
iris
retina
eyebrow
Radial muscles are one set of muscles involved in the iris reflex. Name the other set.
Circular muscles
Suspensory ligaments
Ciliary muscles
Biceps
Why would the pupil get smaller in diameter?
To let in less light.
To let in more light.
To be selective over the wavelength of light that enters.
Circular and radial muscles are responsible for ....
Adjusting to distance.
Accomodation.
Adjusting to light.
In low light levels
Radial muscles contract and circular muscles relax
Radial muscles relax and circular muscles contract
Radial muscles contract and ciliary muscles relax
Radial muscles relax and ciliary muscles contract
