| A | B |
| retina | receptors for vision are located here |
| inner ear | receptors for hearing and equilibrium are located here |
| lysozyme in tears | contributes to the inhibition of bacterial growth on the front of the eyeball |
| aqueous humor | nourishes the lens and cornea since they have no capillaries |
| organ of Corti | receptors of hearing are part of this in the cochlea |
| iris | size of pupil is regulated by this |
| canal of Schlemm | aqueous humor is reabsorbed here |
| tears | mostly water, these wash the front of the eyeball |
| lacrimal glands | these secrete tears and are found within the orbits |
| eyelids | contain skeletal muscle and help spread tears across the front of the eyeball |
| conjunctiva | thin membrane that lines the eyelids and covers the whites of the eyes |
| cartilage | auricle, or pina, is made of skin supported by this |
| ceruminous | glands that are found in the dermis of the ear canal |
| temporal | bone that holds the cavities for the middle ear |
| air | this should be in the cavity of the middle ear |
| eustachian tubes | permits air to enter or leave the middle ear cavity to equalize pressure on both sides of the tympanic membrane |
| ossicles | anotehr name for the bones of the inner ear, collectively |