Glottis
opening between the vocal folds
In humans the glottis (pl.: glottises or glottides) is the middle region of the larynx, where the vocal cords are located. Within this region is the opening between the vocal cords (the rima glottidis). The glottis is crucial in producing sound from the vocal cords. In the bichir, an early lunged fish, the glottis is a slit shaped opening into the oesophagus. In many reptiles air can be passed across a partially closed glottis to produce a hissing sound. In snakes the glottis is found behind the tongue but can be extended out the side of the mouth while eating large prey.
Etymology
From Ancient Greek γλωττίς (glōttís), derived from γλῶττα (glôtta), variant of γλῶσσα (glôssa, "tongue").
Function in humans
Phonation
As the vocal cords vibrate, the resulting vibration produces a "buzzing" quality to the speech, called voice or voicing or pronunciation.
Sound production that involves moving the vocal cords close together is called glottal. English has a voiceless glottal transition spelled "h".
The public source identifies “Glottis” as opening between the vocal folds. This brief keeps that definition visible, then builds a research path around Glottis, opening and between.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 16, 2026. The linked authority identifier is Q374418. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Glottis” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.