Pinna External Auditory Meatus Ear Canal Tympanic Membrane Ear Drum What are the ossicles The small bones of the ear Hammer Malleus Anvil Incus Stirrup Stapes Name the structures that make up the bony osseous labyrinth ID: 707143
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The Human EarSlide2Slide3Slide4Slide5Slide6Slide7Slide8Slide9Slide10Slide11Slide12Slide13Slide14Slide15Slide16Slide17Slide18Slide19Slide20Slide21Slide22Slide23Slide24Slide25Slide26
Name the structures that make up the outer ear.PinnaExternal Auditory Meatus (Ear Canal)Tympanic Membrane (Ear Drum)Slide27
What are the ossicles?The small bones of the ear.Hammer (Malleus)Anvil (Incus)Stirrup (Stapes)Slide28
Name the structures that make up the bony (osseous) labyrinth.CochleaSemicircular CanalsVestibuleSlide29
Which structures are not involved in hearing? They contain the receptors for the sense of ↔.Semicircular CanalsVestibuleSlide30
Which structure allows pressure in the middle ear to be equalized with Patm?Auditory Tube (Eustacian Tube)Slide31
This structure vibrates as longitudinal sound waves strike it; then transmits the vibrations to the ossicles.Tympanic Membrane (Ear Drum)Slide32
Connects the nasopharynx and middle earAuditory (Eustacian) TubeSlide33
The structure that transmits vibrations from the stirrup to the fluid in the inner ear.Oval WindowSlide34
The fluid that bathes the sensory receptors of the inner ear.EndolymphSlide35
The fluid contained within the osseous labyrinth that bathes the membranous labyrinthPerilymphSlide36
Contains the Organ of CortiCochleaSlide37Slide38Slide39
Identify the major areas of the membranous labyrinth: semicircular canals, saccule, utricle, and cochlear ductSlide40
ID each receptor: Organ of Corti, Crista Ampullaris, MaculaSlide41
Organ of CortiSlide42Slide43Slide44Slide45Slide46
Otoliths
Gelatinous Cap
Hair Cells
Supporting Cells
Vestibular Nerve Axons
Acoustic MaculaSlide47
Normal Hair CellsSlide48
Damaged Hair CellsSlide49
The receptors for ____ ↔ are found in the crista ampullaris of the ____.These receptors respond to Δs in ____ motion.
When motion begins, the ___ fluid lags behind and the ___ is bent, which excites the hair cells.
When motion stops suddenly, the fluid flows in the opposite dxn and again stimulates the hair cellsSlide50
The receptors for ___ ↔ are found in the maculae of the ___ and ___. These receptors report the position of the head in space.Tiny stones found in a gel overlying the hair cells roll in response to the pull of ___. Slide51
As they roll, the gel moves and tugs on the hair cells, exciting them.Besides the ↔ receptors of the inner ear, the sense of ___ and ___ are also important in helping to maintain ↔.Slide52
DeafnessSlide53
ConductionCan result from the fusion of the ossiclesSlide54
SensorineuralCan result from damage to the cochlear nerveSlide55
SensorineuralSound is heard in one ear but not in the other, during both bone and air conductionSlide56
ConductionOften improved by a hearing aidSlide57
Conduction and SensorineuralCan result from otitis media
an inflammation/infection of the middle ear (the cavity between the eardrum and the inner ear). Slide58
ConductionCan result from XSive earwax or a perforated eardrumSlide59
SensorineuralCan result from a blood clot in the auditory cortex of the brainSlide60
Conduction Deafnesshearing loss due to problems with the bones of the middle ear Slide61
Sensorineural (Central) DeafnessHearing loss or impairment due to a lesion or defect of the cochlea or the acoustic nerve. Slide62Slide63Slide64