Create
Learn
Share

Eyes

rename
bawulugu's version from 2017-03-23 00:03

Section

Question Answer
Eyelasheshairs to keep debris out
Eyelids (palpebrae)thin skin over a fibrous tarsal plate
Lacrimal carunclelocation of glands that produce a thick secretio
Conjunctivaepithelium covering inside of eyelids and outer surface of eyeball
Tears containsaline water, antimicrobial lysozyme, antibodies, oxygen, and nutrients
Tarsal glandsproduce lipid-rich secretion to keep eyelids from sticking
Palpebral fissureopening between eyelids
Corners of eyelids arelateral and medial canthi
Oculomotor nerve (CN III) controls thesuperior rectus, medial rectus, inferior rectus, and inferior oblique muscles
Trochlear nerve (CN IV) controls thesuperior oblique muscles
Abducens nerve (CN VI) controls thelateral rectus muscles
Fibrous layer (very tough)Sclera, Cornea
Vascular layer (Filled with blood vessels)Choroid, Ciliary body, Iris
Neural layer (Retina)Pigmented layer to prevent light scattering
Contains photoreceptors and other neuronsNeural layer
A biconvex structure that is both clear and flexibleLens
Anterior cavity Smaller – Contains aqueous humor, secreted by ciliary body – watery liquid
Posterior cavityMuch larger – Contains vitreous humor – clear, jelly-like substance that exerts pressure against the walls of the eyeball
Refract lightCornea and lens
determines how much refraction takes placeShape of lens
inverted and reversedImage that strikes retina
very sensitive, but no color; densest on peripheryRods
color vision (RGB); densest at centerCones
synapse with photoreceptorsBipolar cells
axons merge to form the optic disc (beginning of CN II - optic nerve)Ganglion cells
Pigments are derivatives ofRhodopsin
made of two subunits, opsin and retinal (derived from vitamin A)Rhodopsin
memorize