Submental triangle

The submental triangle (or suprahyoid triangle) is a division of the anterior triangle of the neck.

Boundaries
It is limited to:
 * Lateral (away from the midline), formed by the anterior belly of the digastricus
 * Medial (towards the midline), formed by the midline of the neck between the mandible and the hyoid bone
 * Inferior (below), formed by the body of the hyoid bone
 * Floor is formed by the mylohyoideus
 * Roof is formed by investing layer of deep cervical fascia

Contents
It contains one or two lymph glands, the submental lymph nodes (three or four in number) and Submental veins and commencement of anterior jugular veins.

(The contents of the triangle actually lie in the superficial fascia over the roof of submental triangle)