the eye Flashcards
what is the eye
a sense organ
the eye contains _________ sensitive to both _____ intensity and also the _____ of light
the eye contains receptors sensitive to both light intensity and also the color of light
what is the job of the cornea
- allows light rays to pass through the transparent front of the eye
- job = start the focussing of the light rays
after the cornea where do the light rays go
they then pass through the pupil in the centre of the iris
what is the iris
the colored part of the eye
the light rays then pass through the lens, what is the job of the lens
to focus the light rays onto the back of the eye
true or false?
the lens can change its shape
true
it allows us to focus on distant or near objects
what is the back of the eye called
the retina
what is the function of the retina
it contains receptor cells for light which allow us to detect light intensity and light color
the retina send electrical impulses to where?
down the optic nerve to the brain
what Is the white part of the eye and what is its function
the sclera
tough outer structure to protect the eye
The _______ muscles and the __________ ligaments work with the lens. Together they allow us to _____ on distant or near objects
The ciliary muscles and the suspensory ligaments work with the lens. Together they allow us to focus on distant or near objects
what is the pupil
the space in the center of the iris which light passes through
what is the job of the iris
to control the size of the pupil
