Cornea
clear tissue that covers the front of the eye
pupil
opening in which light enters the eye.
iris
a circular structure that surrounds the pupil and regulates how much light enters the eye./it gives the eye its color
lens
flexible structure that focuses light.
retina
lines the back of the eye and contains light-sensitive cells.
nearsightedness
see near objects clearly but not distant ones
Farsightedness
see distant objects clearly but not close ones.
eardrum
is a membrane that vibrates when sound strikes it.
cochlea
a snail-shaped tube that is lined with sound receptor cells.
semicircular canals
which helps your cns maintain its balance.