Senses (the eye) Flashcards
revise
What are the 5 senses?
-sight
-hearing
-taste
-touch
-smell
What is cornea?
The transparent window of the eye. It is strong, convex structure which bends light as it enters the eye.
What is the pupil?
A hole that lets light pass through onto the lens.
What is iris in the eye?
It is made of coloured muscles which can control how much light enters the eye.
What is the lens?
It’s tough and clear, and focuses light rays entering through the pupil onto the fovea on the retina.
What is the retina?
It detects light and sends electrical impulses to the brain through the optic nerve.
What is the optic nerve?
It carries electrical impulses from the retina to the processing centre of the brain where they are interpreted into the images we see.
Can you draw an eye diagram?
https://rmit.pressbooks.pub/colourtheory1/chapter/biology-of-the-human-eye/
Why do we have two eyes?
Having two eyes allow for accurate judgement of distance. It also allows a person to see a 3D view of the object they’re facing.