The trail begins here..

To appreciate hearing loss, obviously the trail has to begin right at the basics - What is sound and how is it produced:

*WARNING, Science ahead*

 Sound is produced by a mechanical force such as a vibrating string which exerts force on air molecules . This repeated compression produces periodic wave-like air pressure variations which enter the outer ear and strike the eardrum, setting it vibrating. 

The sound waves are then transmitted through the ossicles (3 small bones in the middle ear), through to the inner ear and the cochlear, a coiled snail-like organ containing fluid. The cochlear contains the organ of corti, which contains highly specialised hair cells which is stimulated by the vibrations in the cochlear, sending electric impulses to the brain which we interpret as sounds. 

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Here's a nice video that i found:

I'll leave it here for now (gotta run,dinner work awaits), but next time we'll get right into the interesting stuff- *crosses fingers* as I do more research on this topic.

p.s:  man, this feels like such a school assignment now :(

Schoolwork? Bleh.