Term
| free nerve endings (ques) |
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Definition
| Hot and cold stimuli are detected by ________. |
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Term
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Definition
| __________ is a neurtotransmitter that transmits pain sensations to second-order spinal neurons. |
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Definition
| __________ is a neuromodulator that blocks the conduction of pain signals by second-order spinal neurons. |
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Definition
| At rear of tongue, contains 1/2 of taste buds __________. |
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Term
| the higher its pitch (ques) |
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Definition
| The higher the frequency of a sound __________. |
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Term
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Definition
| Cochlear hair cells rest on ____________. |
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Definition
| The acceleration you feel when an elevator begins to rise is sensed by ________. |
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Definition
| The color of light is determinded by _______. |
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Term
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Definition
| The retina receives its oxygen supply from _______. |
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Term
| It has a low threshold (ques) |
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Definition
| Which of the following statements about photopic vision is false? |
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Term
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Definition
| The most finely detailed vision occurs when an image falls on a pit in the retina called the _________. |
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Term
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Definition
| The only cells of the retina that generate action potentials are the _________ cells. |
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Definition
| The visual pigment of a cone cell is _________. |
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Term
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Definition
| The gelatinous membranes of the macula sacculi and macula utriculi are weighted by protein-calcium carbonate granules called ____________. |
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Term
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Definition
| Three rows of _________ in the cochlea have V-shaped arrays of sterocilia and tune the frequency sensitivity of the cochlea. |
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Term
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Definition
| The _______ is a tiny bone that vibrates in the oval window and thereby transfers sound vibrations to the inner ear. |
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Definition
| The ___________ of the midbrain receives auditory input and triggers the head-turning auditory reflex. |
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Term
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Definition
| The function of the ____________ in a taste bud is to replace dead taste cells. |
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Term
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Definition
| Olfactory neurons synapse with mitral cells and tufted cells in the _________, which lies inferior to the frontal lobe. |
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Term
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Definition
| In the phenomenon of _________, pain from the viscera is perceived as coming from an area of the skin. |
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Term
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Definition
| The posterior chamber, the space between the iris and lens, is filled with ___________. |
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Term
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Definition
| Because of ___________, each hemisphere receives signals from both eyes. |
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Term
| right cerebral hemisphere (ques) |
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Definition
| Things we touch with the left hand are perceived only in the _______________. |
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Term
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Definition
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Term
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Definition
| outer white part of eye - gives insertion to muscle. (outer fibrous layer-tunica fibrosa) |
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Term
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Definition
| eye window - refraction, bends light - more than lens does. Avacuslar.(outer fibrous layer-tunica fibrosa) |
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Term
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Definition
| pigmented - middle colored part of eye - controls pupil diameter (middle vascular layer-tunica vasculosa) |
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Term
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Definition
| contraction less tension on eye(middle vascular layer-tunica vasculosa) |
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Term
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Definition
| Highly vascular/dark pigmented area behind retina(middle vascular layer-tunica vasculosa) |
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Term
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Definition
| sensory -back part of eye/light sensitive layer (inner layer-tunica interna) Gets oxygen from choroid |
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Term
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Definition
| transparent mucous -lines inner eyelid and anterior surface of eyeball except cornea |
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Term
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Definition
| makes fine tune adjustments to image |
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Term
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Definition
| ___________ is a serous fluid secreted by the ciliary body into a space between the iris and lens called the posterior chamber. (replaces) |
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Term
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Definition
| _________is a transparent jelly that fills a large space called the vitreous chamber behind the lens. Keeps eyeball from collasping. (non-replaceable) |
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Term
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Definition
| nearsightedness - corrected effect concave lens |
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Term
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Definition
| farsightness - corrected effect convex lens |
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Term
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Definition
| ciliary muscle relaxed and dilated - no correction needed |
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Term
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Definition
| can't simultaneously focus light rays on different planes |
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Term
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Definition
| loss of flexibility in the lenses - more difficult for eyes to focus on nearby objects. |
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Term
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Definition
| largest neurons in retina |
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Term
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Definition
| retina (synapse with rods and cones) |
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Term
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Definition
| enhance perception of contrast (other retinal cell) |
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Term
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Definition
| function in brighter light; they are responsible for day (photopic61) vision as well as color (trichromatic) vision.color sharp - produces visual image (photopsin -pigment)(blue, green and red) |
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Term
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Definition
| scotopic (night/dark)vision- produces visual image (rhodopsin -pigment)requires Vitamin A and protein - opsin. |
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Term
| Primary sensations of taste |
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Definition
| Salty, Sweet, Sour, Umami, Bitter |
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Term
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Definition
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Term
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Definition
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Term
| Encapsulated nerve endings (list) |
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Definition
| Tactile(Meissner), End bulbs (Krause), Lamellar (Pacinian), Bulbous (Ruffini)corpuscles |
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Term
| Encapsulated nerve endings (def) |
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Definition
| ________ are nerve fibers wrapped in glial cells or connective tissue, enchances sensitivity. |
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Term
| Unencapsulated nerve endings (list) |
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Definition
| Free nerve endings, Tactile (Merkel) discs, hair receptors (peritrichial endings) |
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Term
| Unencapsulated nerve endings (def) |
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Definition
| ________ sensory dendrites that are not wrapped in connective tissue. |
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Term
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Definition
| reaborbs extra Aqueous Humor (blockage causes Glaucoma) |
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Term
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Definition
| both constrict if one eye is illuminated (parasympathetic reflex) |
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Term
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Definition
| suspend lens - adjustment, power of accomodation |
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Term
| Macula Lutea (visual axis of eye) |
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Definition
| fovea centralis - is in the center. (eye exam - direct evaluation of blood vessels) means: "Yellow spot" |
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Term
| Light path into eye (def) |
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Definition
| Pigmented layer, photoreceptor cells (rods/cones-not neurons), Bipolar cells, Ganglion cells, Fibers to optic nerve. |
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Term
| Electromagnetic radition (def) |
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Definition
| is visible light with wavelenghts of 400-750nm. |
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Term
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Definition
| attached to tectorial membrane |
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Term
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Definition
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Term
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Definition
| attached to membranous oval window |
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Term
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Definition
| is any audible vibration of molecules |
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Term
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Definition
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Term
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Definition
| adjust cochlear responses to different frequencies |
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Term
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Definition
| goes up/down, has hair cells, is thick |
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Term
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Definition
| where the inner ear begins |
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Term
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Definition
| covered by a membrane called the secondary tympanic membrane. |
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Term
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Definition
| separates the endolymph from the perilymph and helps to maintain a chemical difference between them. |
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Term
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Definition
| vestibular apparatus, three semicircular ducts and two chambers,anterior saccule,posterior utricle |
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Term
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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
| tip & sides of tongue (sweet) |
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Term
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Definition
| (no taste buds) most abundant |
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Term
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Definition
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Term
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Definition
| respond to physical- pressure, vibration, touch, strech, tension, hearing, balance. ie:skin/joints |
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Term
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Definition
| chemical, ie: odor, taste |
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Term
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Definition
| only in the outer segment (night vision - Rhodospin) |
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Term
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Definition
| only absorb light at wavelength of 500nm (peak) |
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