The human voice
The vocal cords are at the top of the windpipe or trachea. The vocal folds are wide open when we inhale. When the airstream passes through them upwards, they come together and produce the sound.
The diaphragm is placed behind the lungs. When we inhale, it lowers, as the lungs expand. When we exhale, it helps to create the airstream.
The throat, nose, mouth and sinuses are part of the resonator system. The sound is ampliflied by these natural hollows.
The articulation of the sound is produced inside our mouth. By moving our tongueor our lips, we shape the sounds turning them into vowels or consonants.

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