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The lungs are an organ in human physiology that is instrumental in the production of speech as a secondary function, their primary funtion being the vital funtion of breathing and providing oxygen to the body.

In the production of speech, the lungs are instrumental in the production of:

  • the pulmonic airstream ( airstream coming from the lungs )
  • egressive sounds: speech sounds produced by means of air streaming from the lungs escaping through the oral cavity / English speech sounds are egressive sounds
  • ingressive sounds: speech sounds produced by sucking in air