Frenulum of the tongue
Small fold of mucous membrane
Frenulum of the tongue
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.
Read on Wikipedia · Image Henry Vandyke Carter, Public domain
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