07 Human Senses - Light Flashcards
1
Q
Structure of the eye
A
draw the diagram
2
Q
cornea
A
The cornea is your eye’s clear, protective outer layer
3
Q
pupil
A
hole in your eye that allows light to enter
4
Q
iris
A
The iris helps control the size of the pupil to let more or less light into the eye and come in diff. colours.
5
Q
lens
A
Refracts light focusing an image onto the retina.
6
Q
retina
A
A wall of light reactive cells which turn light into an electrical signal
7
Q
Optic nerve
A
The means of communication between the eye and the brain
8
Q
steps
A
Light rays enter the PUPIL of the eye.
The LENS focuses the rays so they make an image on the RETINA at the back of the eye.
The RETINA changes the light radiation transfer of energy into an electrical transfer of energy.
This travels through the OPTIC NERVE to the brain.
