Term
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Definition
| consists of an auricle and external auditory meatus |
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Term
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Definition
collect sound wave and direct them into external auditory meatus
composed of skin and ELASTIC cartilage |
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Term
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Definition
passageway for sound waves
[2.5 cm tunnel
elastic cartilage & bone
lined with skin] |
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Term
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Definition
sound waves cause it to vibrate which moves auditory ossicles
[commonly known as eardrum |
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Term
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Definition
amplify and transmit vibrations to the internal ear
3 tiny bones are stapes, incus and malleus
extend from tympanic membrane to oval window of internal ear |
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Term
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Definition
| lateral ossicle, attaches to tympanic membrane and articulates with incus |
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Term
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Definition
| middle ossicle, attaches with malleus and stapes |
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Term
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Definition
| medial ossicle, articulates with the incus and attaches to oval window (vibrates oval window) |
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Term
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Definition
causes air pressure in middle ear to be equal to pressure of atmospheric air
connects middle ear to pharynx
usually closed by opens in swallowing and yawning |
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Term
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Definition
space in temporal bone
contains auditory ossicles and pharyngotympanic tube |
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Term
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Definition
| contains vestibule, semicircular canals, cochlea |
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Term
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Definition
maze-like tunnel in a temporal bone
contains perilymph
has 3 parts: vestibule, cochlea, semicircular canals |
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Term
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Definition
contains membranous labyrinth
medial to middle ear |
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Term
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Definition
transmits vibrations of ossicles to the perilymph
opening of vestibule covered by stapes |
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Term
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Definition
contain membranous labyrinth
continuous with vestibule
3 tunnels posterior to vestibule (2 vertical one horizontal) |
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Term
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Definition
contains membranous labyrinth
coiled tunnel anterior to vestibule, continuous with vestibule |
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Term
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Definition
safety valve that prevents rupture of cochlear duct
membrane-covered opening of cochlea |
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Term
| what are the 6 bones of the orbit you can see |
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Definition
ethmoid
lacrimal
frontal
sphenoid
zygomatic
maxilla |
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Term
|
Definition
contains perilymph, part of bony labyrinth
upper tube, part of cochlea |
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Term
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Definition
| separates scala vestiboli and cochlear duct |
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Term
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Definition
aka scala media
sits on the basilar membrane, SENSORY RECEPTORS FOR HEARING LOCATED HERE |
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Term
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Definition
| overlies the spiral organ |
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Term
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Definition
| separates cochlear duct and scala tympani |
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Term
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Definition
contains perilymph, part of bony labyrinth
the "lower" tube of cochea |
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Term
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Definition
| contains SENSORY RECEPTORS FOR EQUILIBRIUM |
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Term
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Definition
contains endolymph, part of membranous labyrinth
contains SENSORY RECEPTORS FOR EQUILIBRIUM |
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Term
| what carries signals from the inner ear to the brain? |
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Definition
cranial nerve 8
vestibulocochlear |
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Term
| what carries nerves from the cochlea to the brain |
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Definition
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Term
| what carries signals from utricle, saccule, and semicircular ducts to the brain |
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Definition
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Term
| what is located above the vestibular nerve |
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Definition
cranial nerve 7
the facial nerve |
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Term
| what is the poor transmission of sound waves (vibrations) through the outer ear and/or middle ear called |
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Definition
Conduction deafness
sound does not reach inner ear |
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Term
| what is sensorineural deafness |
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Definition
| structures of the cochlea or the cochlear nerve do not function properly |
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Term
| what is the name of the test that can determine the type of deafness a person has |
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Definition
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Term
| what is the eye test called |
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Definition
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Term
| what does the Snellen eye chart determine |
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Definition
| visual acuity (sharpness of vision) |
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Term
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Definition
| blurring of images due to the improper convergence of light rays caused by imperfections in the cornea |
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Term
| what is the most common form of color blindness |
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Definition
| red-green (they only see blue and yellow) |
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Term
| what changes the shape of the lens |
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Definition
| actions of the ciliary body |
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Term
| what is the term for increasing the lens's refractive power |
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Definition
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Term
| what determines how much accommodation can occur? |
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Definition
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Term
| what determines elasticity of a lens? |
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Definition
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Term
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Definition
| the closest point at which an object can be brought into focus |
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Term
| term for determining the distance of an object |
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Definition
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Term
| what is the correction for myopia? |
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Definition
nearsightedness (can't see far)
concave lens |
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Term
| what is the correction for hyperopia |
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Definition
| (farsightedness, can't see near) concex lense |
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Term
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Definition
| eye to long, light rays focus at a point in front of the retina as opposed to right on it |
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Term
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Definition
| light rays focus behind the retina |
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