ch 23 special senses intro/terms
Order by
43 terms
Terms | Definitions |
|---|---|
 smell | olfaction |
| taste | gustation |
| smell and taste, chemicals | chemical senses (2) detect ______ in the external environment |
| olfactory cells | receptors that respond to chemicals in the air, such as perfume or smoke |
| neurons, supporting, olfactory epithelium, epithelium, nasal | olfactory cells are _______ and are located, along with _______ cells, in ___________, a patch of _______ lining the superior part of the ______ cavity |
| I | sensory input from olfactory cells reach the brain via cranial nerves ___ |
| gustatory cells | the receptors for taste |
| taste buds, tongue | gustatory cells are found along with supporting cells in __________, which are located primarily on the ________ |
| gustatory cells | receptors which are modified epithelial cells that respond to chemicals in food and drink |
| VII, IX, X | sensory input from gustatory cells reach the brain via cranial nerves: |
| salt, sweet, sour, bitter | 4 primary tastes are: |
| salt taste | taste produced by ions (Na+, Cl-, K+) |
| sweet taste | taste produced by organic molecules such as glucose |
| sour taste | taste caused by acids |
| bitter taste | taste produced by alkaloids |
| rods and cones | sensory receptors for vision |
| retina | location of rods and cones |
| light, II | rods and cones are receptors that respond to ______. sensory input about vision reaches the brain via cranial nerves ___ |
| epithelial, hair | the sensory receptors for both hearing and equilibrium are modified _______ cells called _____ cells |
| hair cells of hearing | cells that respond to vibrations produced by sound waves |
| hair cells of equilibrium | cells that respond to changes in the position and movement of the head |
| VIII | sensory input about hearing and equilibrium reach the brain via cranial nerves ____ |
| external ear, middle ear, inner ear | 3 divisions of the ear |
| external, middle, inner | the ______ and _______ ears have structures involved in hearing. the ______ ear has structures involved in equilibrium, as well as hearing |
| bony labyrinth, temporal | the inner ear is a complex arrangement of tunnels called the ________ within the _________ bone |
| membranous labyrinth | inside the bony labyrinth is the ___________ |
| perilymph, endolymph | a fluid called _________ is found in the bony labyrinth. another fluid, _________, fills the membranous labyrinth |
| hair cells, gustatory cells | which receptors are composed of epithelial tissue |
| rods and cones, olfactory cells | which receptors are composed of nervous tissue |
| sensory adaptation | refers to the decreased sensitivity of a sensory receptor upon repeated exposure to the same stimulus |
| visual acuity | sharpness of vision |
| astigmatism | blurry vision due to an uneven curvature of the cornea or less commonly, the lens |
| field of vision | the portion of your environment that you can detect visually at any given moment |
| depth perception | judging the distance b/w you and an object |
| stereopsis | using overlapping fields of vision for depth perception |
| accomodation | a change in lens shape, gives your eyes ability to focus on objects at different distances |
| near point | how close to your eye an object can be and still be seen clearly. lens loses elasticity with age. this increases as you age. |
| color blindness | due to a lack of one or more types of cones |
| deafness | reduction in or loss of hearing |
| conduction deafness | no or poor transmission of sound waves (vibrations) thru the outer and/or middle ear; sound does not reach the inner ear |
| sensorineural deafness | structures of the cochlea or cochlear nerve do not function properly |
| nearsighted | myopic |
| farsighted | hyperopic |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.