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Mod 140 unit 4
Terminology
| Question | Answer |
|---|---|
| Orbit | Cone-shaped cavity that contains the eyeball; padded with fatty tissue |
| Conjunctiva | Delicate, transparent mucous membrane that covers the inside of the eyelids and anterior surface of the eye; produces tears |
| Lacrimal Apparatus | Structures involved with the secretion & production of tears. |
| Choroid | Spongy membrane of the blood vessels that begins at the Iris& continues around the eye. |
| Retina | Membrane lining the posterior cavity;cotains rods and cones. |
| Cornea | Transparent layer over the anterior part of the eye. |
| Iris | Colored ring of tissue whose muscles Iris pupil in the center of the Iris. |
| Lens | Clear, hard, disk in the internal eye. |
| Ciliary Body | Smooth muscle that alters the lens of the eye to accommodate for near vision. |
| Accomodation | Muscles can alter the shape of the lens, making it thinner/thicker to allow the incoming light rays to focus on the retinal area. |
| Rods & Cons | Light sensitive cells in the retina; black & white(rods), red, green or blue (cons) |
| Astigmatism | Defect in the refractive powers of the eye in which a ray of light isnt focused on the retina, but is spread over an area. |
| Strabismus | Disorder of the eye in which the optic axes cannot be directed to the same object. |
| Cataract | Clouding of the lens. |
| Conjunctivitis | Inflammed, reddened & swollen conjunctivae with dialated blood vessels on the sclerae. |
| Glaucoma | Increased intraocular pressure (IOP)aqueous humor cannot circulate freely. |
| Hyperopia | Farsightendness. |
| Presbyopia | Loss of flexibility of the lens with blurry near vision & loss of accommodation. |
| Myopia | Nearsightedness. |
| Amblyopia | To prevent double vision, the brain ignores visual images from a misaligned eye. |
| Pinna | The auricle of the exterior ear that collects sound waves. |
| Tympanic Membrane | Membrane that divides the external ear from the middle ear; eardrum. |
| Ossicles | Three tiny bones in the middle ear that functions in the process of hearing: malleus, incus, & stapes. |
| Malleus | First bone of the middle ear. |
| Incus | Second bone of the middle ear. |
| Stapes | Third bone of the middle ear. |
| Cochlea | Structure of the inner ear that is associated with the sense of hearing. |
| Vestibule | Houses the internal ear. |
| Semicicular Canals | Three canals in the inner ear that are oriented in different planes that help the body keep its balance. |
| Audiometry | The measure of hearing. |
| Otosclerosis | An abnormal bone growth in the middle ear. |
| Presbyscusis | The gradual los of hearing. |
| Vertigo | Sensation of being off balance when the body is not moving. |
| Meniere's Disease | Recurring and progressive disease that includes progressive deafness,ringing ears, dizziness & the feeling of fullness in the ears. |
| Otitis Media | Acute or chronoic bacterial infection of the middle ear. |
| Tinnitus | Sounds that are heard constantly or intermittenly in one or both ears, even in a quiet environment. |
| Auditory Meatus | The passages in the outer ear from the auricle to the tympanic membrane. |
| Organ of Corti | Contains hair cell sensory receptors for hearing. |
| Rinne Test | A hearing test that utilizes a tuning fork to compare bone conduction (BC)hearing with air conduction (AC). |
Created by:
Bianca Jones
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