Frenulum
This is called the frenulum linguae.
The lingual frenulum
The tongue, situated in the floor of the mouth, is attached by the lingual frenulum
Lingual frenum
Lingual frenum
A girl who used to be in my school had a medical case where her tongue was more or less attached to the floor of her mouth. The membrane was either too short or too rigid. But the doctors made her have it surgically removed because she couldn't speak clearly otherwise. I guess it allows your tongue to move around your mouth properly.
Tongue tie, or ankyloglossia, is a condition where the tissue connecting the tongue to the floor of the mouth is shorter than usual, restricting the tongue's range of motion. This can affect speech, feeding, and dental development in some cases. Treatment may include simple stretching exercises, surgical release, or therapy depending on the severity.
To the floor of the mouth
tongue
The Frenulum Linguea
Frenulum linguae
The frenulum is the skin that attaches the tongue to the floor of the mouth.
The tongue is a fleshy muscle on the floor of the mouth of most vertebrates, which is the primary organ of taste.