<prompt> During examination of parotid gland, parotid duct can be palpated at the following except:Anterior border of masseterAt the opening just opposite to lower second molarPierced to the buccinatorAt the anterior border of parotid gland  <response>: Parotid Duct Stensons DuctParotid duct, about 5 cm long, emerges from the middle of the anterior border of the gland and opens into the vestibule of the mouth opposite the crown of upper second molar tooth. 