How Sounds Travel Through The Ear (2. Middle Ear (Malleus: Gets vibrations…
How Sounds Travel Through The Ear
1. External Ear
fleshy part of external ear. Directs sound waves toward external auditory meatus
External Acoustic Meatus:
the passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane
: thin layer of tissue in the human ear that receives sound vibrations from the outer air and transmits them to the auditory ossicles
2. Middle Ear
Gets vibrations from the tympanic membrane and "hammers" the vibrations
Collects the vibrations and vibrates the stapes
Gets vibrations from incus and amplifies sounds about 22% and sends to the oval window
3. Inner Ear
Sends the sound to scala vestibuli
Conduct sounds vibration to the cochlear duct
Filled with fluid that vibrates when the sound waves from the stapes bone strike against it
Moves by incoming sound waves and is essential for the sense of hearing
Organ Of Corti:
The hair cells convert the vibrations into nerve impulses that are transmitted by the cochlear portion of the eighth cranial nerve to the brain.
Responsible for the special senses of hearing and balance.
impluse created and sent along the auditory nerve
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