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the eye.
| Question | Answer |
|---|---|
| accessory structures of the eye | eyebrows, eyelids, eyelashes, conjunctiva, lacrimal apparatus, and the extrinsic eye muscles |
| eyebrow functions | provides shade and direct the movement of perspiration |
| eyelid functions | protects eye, keeps eye from drying |
| palpebral conjunctiva | The lining of the inner surface of the eye |
| eyelashes functions | protects the eye from foreign objects and shades the eye |
| conjunctiva covers | inner aspect of the eyelid and anterior aspect of the eye except the cornea |
| conjunctiva functions | protect the eye and produces lubricating mucus |
| lacrimal gland is located | superior and lateral to each eyeball |
| extrinsic muscles function | move the eyeball |
| the 6 extrinsic muscles | superior rectus, inferior rectus, medial rectus, lateral rectus, superior oblique, and inferior oblique |
| the inner eye is divided by the lens into | anterior cavity and posterior cavity |
| anterior cavity contains _____humor | aqueous |
| posterior cavity contains_____ humor | vitreous |
| from outter to inner, the 3 layers of the eye | fibrous, sensory, and vascular |
| fibrous tunic components | sclera and cornea |
| vascular tunic components | choroid, ciliary body, and iris |
| neural tunic consists of | retina |
| sclera is form by ______tissue | fibrous connective |
| sclera functions | attachment site, gives eye shape, and provides protection |
| cornea functions | protection, allows light into eye, and focusing of light |
| cornea is formed from _____tissue | fibrous connective |
| surface of the cornea is lined with | stratified squamous epithelium |
| stroma | The internal layers of transparent collagen fibers of the cornea |
| choroid | forms the middle layer of the wall of the eye |
| choroid functions | its pigment absorbs light and supplies nutrients to the tunics |
| ciliary bodies components | ciliary muscle and ciliary processes |
| ciliary muscle function | regulation of shape of lens |
| ciliary processes functions | secrete fluid, provide attachment |
| suspensory ligament | provides for positioning of lens and transfer of tension |
| light sensitive elements are | rods and cones |
| scleral venous sinus function | return aqueous humor into venous circulation. |
| The focal point of the lens is at the ________ of the retina. | fovea centralis |