What is the name of the mucous membrane that attaches the tongue to the floor of the mouth?

The mucous membrane that connects the tongue to the floor of the mouth is called the frenulum. This thin band of tissue plays an important role in the mobility of the tongue, allowing for essential functions such as speech and swallowing. The frenulum ensures that the tongue is anchored in place while still allowing for its range of motion, which is crucial for various oral activities.

The other options refer to different anatomical structures. Lingua refers to the tongue itself, gingiva denotes the gum tissue surrounding the teeth, and palate relates to the roof of the mouth. Understanding these definitions helps clarify why the frenulum is specifically the structure that facilitates the connection between the tongue and the floor of the mouth. This anatomical distinction is crucial for recognizing the functions of each part involved in oral and anatomical health.