Glottis

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The glottis is defined as the combination of the vocal folds and the space in between the folds (the rima glottidis).[1]

Contents

Function

As the vocal folds vibrate, the resulting vibration produces a "buzzing" quality to the speech, called voice or voicing or pronunciation.

Sound production involving only the glottis is called glottal. English has a voiceless glottal fricative spelled "h". In many accents of English the glottal stop (made by pressing the folds together) is used as a variant allophone of the phoneme /t/ (and in some dialects, occasionally of /k/ and /p/); in some languages, this sound is a phoneme of its own.

Skilled players of the Australian didgeridoo restrict their glottal opening in order to produce the full range of timbres available on the instrument. Additionally, it is believed that hiccups originally come from an adaptation of amphibious humans so that the glottis would close forcing water out of the gills similar to a frogs croak or ribbit. [2]

The vibration produced is an essential component of voiced consonants as well as vowels. If the vocal folds are drawn apart, air flows between them causing no vibration, as in the production of voiceless consonants.

The glottis is also important in the valsalva maneuver.

  • Voiced consonants include /v/, /z/, /ʒ/, /d͡ʒ/, /ð/, /b/, /d/, /ɡ/, /w/.
  • Voiceless consonants include /f/, /s/, /ʃ/, /t͡ʃ/, /θ/, /p/, /t/, /k/, /ʍ/, and /h/.

Additional images

Larynx

The entrance to the larynx, viewed from behind.

The entrance to the larynx.

See also

References

References of Glottis Simulator

  • de Menezes Lyra R. Glottis simulator. Anesth Analg. 1999 Jun;88(6):1422-3.[1]
  • Smith, N Ty. Simulation in anesthesia: the merits of large simulators versus small simulators. Current Opinion in Anaesthesiology. 13(6):659-665, December 2000.

extrinsic ligaments: Hyoepiglottic ligament · Thyrohyoid membrane (Lateral ligament, Median ligament· Thyroepiglottic ligament · Cricotracheal ligament

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