http://en.wikipedia.org/wiki/Mouth
Mouths are also used as part of the mechanism for producing sounds for communication. To produce sounds, air is forced from the lungs over vocal cords in the larynx. In humans, the pharynx, the soft palate, the hard palate, the alveolar ridge, the tongue, the teeth and the lips are termed articulators and play their part in the production of speech.
Mouths are also used as part of the mechanism for producing sounds for communication. To produce sounds, air is forced from the lungs over vocal cords in the larynx. In humans, the pharynx, the soft palate, the hard palate, the alveolar ridge, the tongue, the teeth and the lips are termed articulators and play their part in the production of speech.
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