part of part of organism subdivision neck submandibular region https://upload.wikimedia.org/wikipedia/commons/thumb/3/36/Musculi_coli_base%2C_my_edits_for_tringles%2C_labeled_triangles%2C_Submandib.svg/500px-Musculi_coli_base%2C_my_edits_for_tringles%2C_labeled_triangles%2C_Submandib.svg.png trigonum submandibulare Wikipedia:Submandibular_triangle submandibular triangle digastric triangle we place submandibular triangle from FMA here, although this may be a narrower region with more precise boundaries UBERON:0035775 submaxillary triangle FMA:57779 The region between the mandible and the hyoid bone that contains the submandibular and sublingual glands, suprahyoid muscles, submandibular ganglion, and lingual artery.