The Anterior Triangle and Root of Neck

Submental Triangle



Inferiorly: Body of hyoid bone.

Laterally: Right and left anterior bellies of digastric.

Floor: Two mylohyoid muscles.

Apex: At inferior end of the symphysis menti.



Contents of submental triangle

Submental lymph nodes. These receive lymph from the following areas:

  • Tip of the tongue.
  • Floor of the mouth.
  • Mandibular incisor teeth and associated gingivae
  • Central part of the lower lip.
  • Skin of the chin.

Lymph from here drains into submandibular and deep cervical lymph nodes.

Submental veins and arteries. The submental veins unite to form the anterior jugular vein.