has part has part has_part characteristic of part of has modifier abnormal parotid gland morphology abnormal salivary gland duct morphology abnormal parotid excretory duct morphology MP:0013750 any structural anomaly of the interlobular excretory ducts of the parotid gland which are found in the connective tissue septa and formed by the union of several intralobular striated (secretory) ducts; ultimately, the excretory ducts of the parotid gland coalesce and form a single main excretory duct (Stensen's duct) that opens into the oral cavity; excretory ducts do not change the secretory product morphology abnormal parotid gland excretory duct