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21 Cards in this Set
- Front
- Back
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External Ear
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appendage on the side of the head
consists of two parts |
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Auricle
AW-ri-kull |
appendage on the side of the head that surrounds the auditory canal
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External Auditory Canal
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a curving tube about 2.5 cm in length
ends at the tympanic membrane |
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Tympanic Membrane
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partition between the enternal and middle ear
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Ceruminous Glands
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produce cermen that collects in the canal
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Middle Ear
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tiny and vert thin epithelium lined cavity hallowed out of the temporal bone
houses 3 small bones |
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Ossicles
OS-si-kulz |
the 3 bones of the middle ear
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Malleus
(hammer) |
"handle" attaches to the inside of the tympanic membrane
"head" attaches to the incus |
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Incus
(anvil) |
attaches to the stapes
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Stapes
(stirrup) |
presses against the oval window
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Oval window
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small opening that seperates the middle ear from the inner ear
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Eustachian tube (auditory)
yoo-STAY-shun |
connects the throat with the middle ear
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Inner Ear
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generates nerve impulses that result in hearing and equilibrium
consists of 3 spaces (bony labyrinth) |
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Perilymph
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fluid that fills the bony labyrinth
is devided into the vestibule, semicircular canals and cochlea |
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Vestibule
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adjacent to the oval window
between the semecircular canal and cochlea |
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Semicircular Canals
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3 total
where the mechanoreceptors (for balance and equilibrium) are located |
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Ampulla
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dilated area in each semicircular canal
contains crista ampullaries |
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Crista Ampullaries
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generate nerve impulses when you move your head
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Organ of Corti
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organ of hearing
surrounded by endolymph |
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Otitis media
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middle ear infection
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Mechanoreceptors
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help with balance and equilibrium.
located in 3 semcirc canals and vestibule |
