Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
Light enters the center dark opening of the eye, which is surrounded by the colored portion of the eye or iris |
Pupil |
|
|
A Membrane lining the inner surfaces of the eyelids & anterior portion of the eyeball over the white of the eye |
Conjunctiva |
|
|
A fibrous, transparent tissue that extends like a cone over the pupil & iris |
Cornea |
|
|
Fibrous layer under the conjunctiva, extends from cornea on the anterior surface of the eyeball to the optic nerve in the back of the eye |
Sclera |
|
|
Function from cornea to bend the rays of light so they are focused properly. |
Refract |
|
|
dark brown membrane inside the sclera. contains many blood vessels that supply nutrients to the eye |
choroid |
|
|
the choroid, iris & ciliary body are all together known as the? |
uvea |
|
|
Transparent, biconvex body behind the pupil of the eye. it refracts light to bring into focus on the retina |
lens |
|
|
The refractory adjustment to focus on an object from far to near is called? |
accommodation |
|
|
maintains the shape of the anterior portion of the eye and nourishes the structures in that region |
aqueous humor |
|
|
area behind the cornea & in front of the lens & iris |
anterior chamber |
|
|
structure surrounding the lens that connects to the choroid & iris. secretes aqueous humor & controls the shape of the lens. |
ciliary body |
|
|
cavity of the eye, which is a large region behind the lens filled with soft jelly like material. |
vitreous chamber |
|
|
jelly like material, that maintains the shape of the eyeball and is not constantly reformed. |
vitreous humor |
|
|
is a thin delicate and sensitive nerve layer of the eye, containing photo-receptor cells (cones & rods) |
retina |
|
|
photo-receptor cells of the retina essential for vision in dim light & for peripheral vision 120 million |
rod |
|
|
photo-receptor cells of the retina that transforms light energy into nerve impulses.
responsible for color & central vision 6.5 million |
cone |
|
|
cranial nerve carrying impulses from retina to the (cerebral cortex) |
optic nerve |
|
|
blind-spot of the, it only contains nerve fibers, no rods or cones |
optic disc |
|
|
contains fovea centralis, which is the clearest vision. yellowish region of the retina |
macula |
|
|
tiny pit or depression in the retina that is the region of clearest vision |
fovea centralis |
|
|
posterior part of the eye |
fundus |
|
|
nerve impulses that travel down each optic nerve from each retina come together to form? |
optic chiasm |
|
|
images fused in the occipital lobe form a 3D effect called |
binocular vision |
|
|
relay center of the brain. Optic nerve fibers travel through this on their way to the cerebral cortex |
thalamus |
