The frenulum (or frenum) of the tongue, tongue web, lingual frenulum, frenulum linguae, or fraenulum is a small fold of mucous membrane extending from the floor of the mouth to the midline of the underside of the human tongue. == Development == The tongue starts to develop at about four weeks.
The frenulum (or frenum) of the tongue, tongue web, lingual frenulum, frenulum linguae, or fraenulum is a small fold of mucous membrane extending from the floor of the mouth to the midline of the underside of the human tongue. == Development == The tongue starts to develop at about four weeks.
Source: Wikipedia "Frenulum of the tongue" · CC BY-SA 4.0
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