Term
| general senses of touch (3) |
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Definition
| "temperature, pressure, pain" |
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Term
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Definition
| "smell, taste, sight, hearing, equilibrium" |
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Term
| receptors for equilibrium housed in the… |
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Definition
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Term
| 70 percent of all sensory receptors are in the… |
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Definition
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Term
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Definition
| (1) most of eye is enclosed in bony orbit; (2) cushion of fat surrounds most of the eye |
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Term
| external and accessory structures of the eye (6) |
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Definition
| "eyelids, eyelashes, meibomian glands, ciliary glands, conjuctiva, lacrimal apparatus" |
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Term
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Definition
| produce oily secretion to lubricate eye (modified sebacious glands) |
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Term
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Definition
| modified sweat glands between eyelashes |
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Term
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Definition
| membrane that lines eyelides; connects to surface of eye; secretes mucus to lubricate eye |
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Term
| lacrimal aparatus consists of… (4) |
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Definition
| "lacrimal gland; lacrimal canals, lacrimal sac; nasolacrimal duct" |
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Term
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Definition
| "produce/release lacrimal fluid, a dilute salt solution or tears (located above lateral end of each eye)" |
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Term
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Definition
| drains lacrimal fluid from eyes |
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Term
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Definition
| provides passage of lacrimal fluid from lacrimal canals towards nasal cavity |
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Term
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Definition
| "lacrimal fluid flushed into here from lacrimal sac, then empties into nasal cavity" |
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Term
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Definition
| dilute salt solution that contains antibodies and lysozyme |
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Term
| lacrimal appartus functions (2) |
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Definition
| "(1) protects, mostens, lubricates eye; (2) empties into nasal cavity" |
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Definition
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Definition
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Definition
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Term
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Definition
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Term
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Definition
| elevates eye and turns it laterally |
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Term
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Definition
| depresses eye (looks down) and turns it laterally |
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Term
| wall of eye composed of 3 tunics |
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Definition
| fibrous tunic--sclera/white of eye and cornea which is transparent (outside layer); chorioid--blood rich (middle layer); sensory tunic or retina (inside layer |
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Term
| "anteriorly, choriod is modified to form 2 smooth muscle structures" |
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Definition
| clilary body (to which lens is attached) and iris |
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Term
| retina has 2 types of receptors |
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Definition
| rods and cones (called photoreceptors because respond to light) |
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Term
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Definition
| on periphery--to see black/white and dark vision; most found towards edges of retina |
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Term
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Definition
| gives color; densest in center of retina |
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Term
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Definition
| lateral to each blond spot in eye--contains only cones |
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Term
| rods and cones distributed over entire retina EXCEPT… |
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Definition
| where optic nerve leaves eyeball at the obtic disc or blind spot |
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Term
| how many types of cones? Why? |
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Definition
| 3--different cones are sensitive to different wavelengths (color blindess is result of lack of one cone type) |
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Term
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Definition
| "biconvex, crystal-like structure" |
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Term
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Definition
| a suspensory ligament attached to ciliary body |
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Term
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Definition
| water fluid found in chamber between lens and cornea; similar to blood plasma |
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Term
| functions of aqueous humor (2) |
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Definition
| helps maintain introcular pressure; provides nutrients for lens and cornea |
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Term
| aqueous humor reabsorbed into venous blood through… |
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Definition
| canal of Schlemm (located at juinction of sclera and cornea) |
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Term
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Definition
| ability of eye to focus specifically for close objects (less than 20 feet away) |
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Term
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Definition
| where nerve fibers from the medial side of each eye cross over to opposite side |
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Term
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Definition
| fiber tracts that result from cross over at optic chiasma |
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Term
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Definition
| (1) optic tracts…(2) thalamus…(3) visula cortex of occipital lobe |
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Term
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Definition
| reflexive movement of eyes medially when viewing close objects |
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Term
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Definition
| pupils constrict in bright light |
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Term
| accomodation pupillary reflex |
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Definition
| pupils constrict when viewing close objects |
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Term
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Definition
| hearing and equilibrium (balance) |
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Term
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Definition
| receptors that respond to physical forces in ear |
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Term
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Definition
| outer ear (pinna and external auditory canal); middle ear (tympanic cavity); inner ear (osseous or bony labyrinth) |
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Term
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Definition
| secrete earwax or cerumen |
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Term
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Definition
| eardrum (at end of external auditory canal) |
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Term
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Definition
| air-rilled cavity in temporal bone; only involved in sense of hearing |
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Term
| 2 tupes associated with tympanic cavity |
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Definition
| opening from auditory canal (oval window) is covered by tympanic membrane; auditory tube connecting middle ear with throat |
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Term
| bones of tympanic cavity (3) |
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Definition
| malleus (hammer); incus (anvil); stapes (stirrup) |
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Term
| inner ear or bony labyrinth filled with |
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Definition
| perilymph (plasmalike fluid) |
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Term
| inner ear consists of (3) |
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Definition
| "cochlea, vestibule, semicircular canals" |
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Term
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Definition
| inside cochlea; contains hearing receptors or hair cells |
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Term
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Definition
| hair cells of organ of Corti positioned on this |
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Term
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Definition
| lies over hair cells of organ of Corti |
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Term
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Definition
| equilibrium receptors of inner ear |
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Term
| equilibrium receptor cells in 2 structures |
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Definition
| vestibule and semicircular canals |
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Term
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Definition
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Term
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Definition
| equilibrium receptors in vestibule (report on position of head and send info via vestibular nerve) |
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Term
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Definition
| "each macula is a patch of receptor cells with their ""hairs"" embedded in the otolithic membrane (gel material containing tiny calcium stones)" |
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Term
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Definition
| equilibrium when moving head (receptors found in semicircular canals) |
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Term
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Definition
| receptors in semicircular canals--consist of tuft of hair cells covered with gelatinous cap (cupula) |
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Term
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Definition
| taste and smell (both use chemoreceptors) |
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Term
| taste has how many types of receptors? |
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Definition
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Term
| olfactory receptors location |
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Definition
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Term
| olfactory impulses transmitted via which nerve? |
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Definition
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Term
| interpretation of smells made in… |
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Definition
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Term
| "when olfactory receptor cells stimulated by chemicals dissolved in mucus, they transmit umpulses along the…" |
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Definition
| olfactory filaments (which make up the olfactory nerve--CN1) |
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Term
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Definition
| projections that cover the tongue |
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Definition
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Definition
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Term
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Definition
| large papillae (on back of tongue) with taste buds |
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Term
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Definition
| receptors of taste buds; have hairs (long microvilli) which are stimulated by chemicals dissolved in saliva |
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Term
| 3 cranial nerves carry taste impulses from various tast buds to gustatory cortex |
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Definition
| "facial nerve covers anterior part of tongue (CN7), glossopharyngeal nerve (CN9); vagus nerve (CN10)" |
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Term
| 4 basic taste sensations (receptors) |
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Definition
| "sweet, sour (acids), bitter (alkaloids) salty (metal ions)" |
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