What type of tissue is the frenum comprised of?

The frenum, which is found in various areas of the oral cavity, such as under the tongue (lingual frenum) and between the gums and lip (labial frenum), is primarily made up of a fold of mucous membrane. This mucous membrane consists of epithelial tissue that is moistened with mucous, allowing for flexibility and movement. This is essential in the mouth as the frenum facilitates actions like tongue movement and lip mobility, contributing to functions such as eating and speaking.

While connective tissue does play a supportive role in the structure of the frenum, it does not constitute the primary material that defines the frenum itself. Options referencing muscle or stratified epithelial tissue do not accurately represent the main composition of the frenum, as it is the mucous membrane that directly forms the anatomical structure. Understanding this anatomical detail is vital for recognizing how the frenum functions in oral mechanics and its potential implications in dental health.