International Board of Certified Lactation Consultant (IBCLC) Practice Exam

What is the name of the fold of tissue under the tongue that everyone has?

1. Sublingual frenulum

2. Labial frenulum

3. Lingual frenulum

4. Buccal frenulum

The correct answer is: Sublingual frenulum

The name of the fold of tissue under the tongue is the sublingual frenulum. This structure connects the underside of the tongue to the floor of the mouth, helping to stabilize the tongue's position and movement. Its significance lies in its role in various oral functions, such as speaking, swallowing, and breastfeeding. In infants, a tight or restrictive frenulum can lead to breastfeeding challenges, which are important considerations for lactation consultants. The other terms describe different types of frenula found in the mouth, but they are not located under the tongue. The labial frenulum is the tissue connecting the inside of the lip to the gum, while the lingual frenulum is a generalized term often used but less precise than sublingual. The buccal frenulum relates to the tissue attaching the inner cheek to the gum. Understanding these differences helps clarify the specific role of the sublingual frenulum and its relevance to oral and breastfeeding health.