The hearing organs 22. FIND OUT what functions earwax has in the human body. We can hear sound and noise thanks to our ears, which have three par ts: Outer ear: in this par t , the ears receive sound waves and send them through the ear canal . Middle ear: in this par t, a membrane called the eardr um vibrates when the sound waves reach it and it transmits these vibrations to a ser ies of small bones. I n ner ea r: i n t h i s pa r t , a spi r a l- shaped cav it y ca l led t he coch lea conver t s t he v ibr at ion s of t he sou nd waves i nto elec t r ica l impu l ses . These a re t r a n sm it ted v ia t he aud itor y ner ve to t he br a i n . 2 6. Soundscapes 23. LOOK at the pictures and write a list of sounds that you might hear in each of these places. Then share it with the rest of the class and discuss. A soundscape is the result of all the sounds in a space at a given moment . The sound of a place is unique, like its traditions or the accent of its inhabitants . Today, our soundscapes have become more uniform. The sound of traffic is generally present in most people's lives , threatening the diversit y of our acoustic env ironment . outer ear middle ear inner ear ear auditory nerve cochlea eardrum ear canal 1 18 I Rhythm in our blood
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