Eye Flashcards
Cornea
the clear zone at the front of the eyeball
Pupil
the variable-sized opening that lets light into the eye
Lens
a flexible, curved transparent disk that fine-focuses light rays into the retina
Iris
the colored ring containing muscles that alter the size of the pupil
Ciliary body
contracts or relaxes to make the suspensory ligaments either taut or slack and the lens either thinner or fatter
Vitreous humor
a thick jelly that fills or shapes the back of the eye
Retina
a membrane packed with light-detecting photoreceptors called rods and cones
Optic nerve
relays nerve impulses from photoreceptors in the retina to the brain
Choroid coat
a dark layer containing blood vessels
Sclera
the tough coat covering most of the eyeball
Suspensory ligament
attach the lens to the ciliary body and hold it in place
Aqueous humor
the clear, watery fluid circulating in the chamber of the eye between the cornea and the lens
