sight Flashcards
eyelid
covers and protects the eye, thin skin
eyelashes
fine hairs that function to protect the eyes from dust and debris.
conjunctiva
is a covering around the eye and under the eyelids
conjunctivitis
pink eye
lacrimal gland
produce tears, which drain into the nasal cavity via the LACRIMAL DUCT.
function of tears
to moisten and lubricate the eye surface, and it has enzymes that kill bacteria.
cornea
transparent dome that focuses light
sclera
continuation of cornea, going toward the back of the eye (white of the eye)
optic nerve
exits at optic disk and transmits information from the eye to occipital lobe of the brain.
optic neuritis
inflammation of the optic nerve
choroid
contains blood vessels
ciliary body
holds the lens in place
lens
helps focus
iris
colored portin of the eye
pupil
opening for light to enter
aqueous humor
liquid surrounding the lens
outer tunic of the eye
cornea, sclera, optic nerve
middle tunic of the eye
choroid, ciliary body, lens, iris, pupil, aqueous humor
inner tunic of the eye
retina, fovea Centralia, optic disc, vitreous humor
retina
visual receptor cells
fovea centralis
region of the sharpest vision, also called the macula
optic disc
where nerve fibers leave the eye, creating the blind spot
vitreous humor
supports internal parts, fluid within the eye
heterochromia
one eye is a different color than the other
what determines the color of your eye
melanin
