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zooch.15 part 2
special senses part 2
| Question | Answer |
|---|---|
| responsible for color vision | cones |
| Change in shape of lens to focus image on retina | accomodation |
| Secrete aqueous humor | ciliary process |
| Space extending from iris to ciliary body and lens | posterior chamber |
| Contains muscles that adjust diameter of pupil | iris |
| Part of vascular tunic covered by sclera | choroid |
| nearsightedness | myopia |
| Outer layer of eye, consists of cornea (clear) and sclera (white) | fibrous tunic |
| Covers inner surface of eyelids | palpebral conjunctiva |
| Photoreceptor cells responsible for vision under dim light conditions | rods |
| Molecule that straightens when light strikes visual pigments | retinal |
| Passageway where aqueous humor is reabsorbed into blood | canal of Schlemm (scleral venous sinus) |
| Blind spot where optic nerve leaves retina | optic disc |
| Compound from which visual pigments are derived | rhodopsin |
| Modified sebaceous glands inside eyelid | tarsal (Meibomian) glands |
| Optic nerve --> optic chiasm --> optic tracts --> lateral geniculate nucleus of thalamus --> optic radiation --> primary visual cortex | visual pathway to brain |
| Bending of light rays | refraction |
| Transparent proteins that fill lens cells | crystallins |
| normal vision | emmetropia |
| Space extending from cornea to iris | anterior chamber |
| Cells whose axons form optic nerve | ganglion cells |
| Yellow spot in retina which contains fovea (area of sharpest vision in the retina | macula lutea |
| farsightedness | hyperopia |
| Part of visual pathway where half of nerve fibers cross over to opposite side | optic chiasm |
| Reaction in which retinal dissociates from opsin | bleaching |