Chapter 36 The Sensory System Vocabulary

Question Answer
Anterior chamber area of the eye in front of the iris that holds the vitreous humor and regulates the pressure in the eye
auditory ossicle bones of the inner ear that transmit sound vibrations
cochlea spiral shaped passages in the inner ear that recieve sound vibrations and initiates an impulse to the brain for translation
cones cells in the eye that allow animals to see colors
constrict to close
cornea clean outer layer of the eye that is commonly easily damaged or scratched
dilate to open
dynamic equilibrium maintaining balance in response to rotational or angular movement
ear sensory organ that enables hearing
eustachian tube narrow duct that leads from middle ear to the nasopharynx and maintains air pressure
external auditory canal tube that transmits sound from the pinna to the tympanic membrane
iris middle layer of the eye that gives the eye it's color and holds the pupil
menace response test a reflext test of the eye where a hand is moved quickly toward the eye without touching the eye or any hair around the eye
nystagmus condition where the eyes jump back and forth in rhythmic jerks due to damage in the inner ear, brain stem, or cranial nerves
oval window membrane that separates the middle and inner ear
pinna external portion of the ear
posterior chamber area behind the eye that holds the nerves
pupil area in the center of the eye the opens and closes with light response
pupillary light response test light shown into the animal's eyes to note constriction or shrinking of the pupil and dilation or expanding when the light source is removed from the eye
retina inner layer of the eye that contains two types of cells that aid in seeing color and depth
rods cells that allow the eye to detect light and depth and make up 95% of the cells within the eye
round window membrane that receives sound waves through fluid passed through the cochlea
sclera outer white layer of the eye
semicircular canals sensory cells that generate nerve impulses to regulate position
static equilibrium maintenance of the position of the hear relative to gravity
tympanic bulla osseous chamber at the base of the skull
tympanic membrane eardrum, tissue that separates the outer and middle ear
vestible portion of the inner ear that contains specialized receptors for balance and position
vitreous humor jelly like fluid material located behind the iris and lens that controls the pressure of the eye

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