Where the lingual frenum attaches to the floor of the mouth are two small, raised folds of tissue, one on either side of the frenum, which are called sublingual sulcus.

Question

Quizplus · Accepted Answer

The two small, raised folds of tissue on either side of the lingual frenum are called the sublingual folds or plica sublingualis, which contain the duct openings for the submandibular and sublingual salivary glands, not the sublingual sulcus. The sublingual sulcus refers to the groove or depression in the floor of the mouth where the sublingual gland resides.

Where the Lingual Frenum Attaches to the Floor of the Mouth