Eye Flashcards
Cornea
Anterior clear portion of fibrous tunic
Fovea Centralis
Retinal area providing greatest acuity
Suspensory Ligaments
Attaches lens to ciliary body
Lens
Biconvex structure that focus light
Sclera
Posterior portion of fibrous tunic
“white” of the eye
tougher, outer layer, protects, gives shape to eye
Conjuctiva
Protective mucous membrane covering sclera, lining eyelids
Vascular Tunic
Choroid, ciliary body, and iris
Iris
Regulates amount of light entering the eye
Colored part of eye
2 Intrinsic eye muscles
Ciliary Body
Controls shape of lens for focusing
2 instrinsic eye muscles
Retina
Location of photoreceptors
Optic Disk
Also known as the “blind spot”
Point of origin of optic nerve
Pupil
Opening in iris allowing light into eye
Vitreous Body
Gel-like substance filling posterior cavity, holds retina in place
Acqueous Humor
Fluid filling anterior cavity of eye
Choroid
Black pigment absorbs stray light rays; blood vessels nourish retina