SUPERFICIAL PART The inferior surface is covered by:Skin Platysma Cervical branch of the facial nerve Deep fascia Facial vein Submandibular lymph nodes.The lateral surface is related to:The submandibular fossa on the mandible Insertion of the medial pterygoid The facial arteryThe medial surface is related to: Mylohyoid, hyoglossus and styloglossus muscles from before backwards. Inferiorly: It overlaps stylohyoid and the posterior belly of the digastric.