part of submandibular gland submandibular gland duct 2010-02-16T07:42:48Z BTO:0004556 BrendaTissueOBO The duct of the submandibular salivary gland; it opens at the sublingual papilla near the frenulum of the tongue. Wharton's duct ductus submandibularis ductus submaxillaris mgr submandibular duct submaxillar gland duct submaxillary duct