| A | B |
|---|
| conjunctiva | thin mucous membrane lining the inner surgace of the eyelids and anterior sclera |
| eyelid | skeletal muscle covered with skin used for protection |
| cornea | contains pain and touch receptors for protection |
| aqueous humor | nourishes lens and cornea |
| Canal of Schlemm | aqueous humor drains into this |
| pupil | size regulated by muscles of the iris |
| lens | shape is changed by the ciliary muscles |
| iris | colored part of eye |
| retina | inner layer of eyeball; found only in the back portion of the eye; contains visual receptors |
| choroid layer | middle layer of eyeball |
| sclera | outer layer of eyeball; made of fibrous tissue |
| optic nerve | used for transmission of impulses; made of ganglion neurons |
| cranial nerves for movement of eyeball | aculomotor, abducens, trochlear |
| fovea | area where specialized cone cells are concentrated; no rods here |
| best place for color vision | fovea |
| lacrimal | pertaining to tears |
| tears | mostly water; used to cleanse eye |
| lysozyme | enzyme in tears that inhibits bacterial growth |
| eyelids | protection; help spread tears |
| lacrimal glands | secrete tears |
