Have you wonder how can you hear the sound with your ear? Here is the diagram of an ear model:
1) The sound waves from the environment will transmit to the External Ear and the sound will enter through the Ear Canal. Then the sound reach to the Ear Drum, it will cause a vibration. 2) After the vibration, the sound then transmitted through the Ossicles (Malleus, Incus, and Stapes), are the small little bones that build up the pressure of the sound waves and then it transmit to 3) Oval Window (Stapes), a membrane which lead to the entrance of 4) Cochlea, the round membrane. Cochlea is set to stabilize the pressure in the inner ear. The fluids that fill in cochlea, transmit the waves round and round to the scala tympani, making the basilar membrane to separate the vibration. 5) And lastly the sound waves impulses are sent from cochlea nerve to the Brain.
There are some parts missing out in the drawing we did in class and some of the terms were named incorrectly. Ear Tunnel should be called Ear Canal. We had the Ear Drum correct, and the brain of course, but we were missing out the ossicles, oval window, and cochlea which you can find in the diagram. Therefore the real mental model of our ear is way more complex than our drawing we depicted in class.
Links and Sources:
http://www.medclick24-7.com/med-images/normal-ear01.htm
http://www.siemens-hearing.com/hearing_aids/hearing_info/anatomy.aspx
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