<prompt> Blood supply to Eustachian tube isAcending pharyngealMiddle meningealAery of pterygod canalAll  <response>: BLOOD SUPPLY OF EUSTACHIAN TUBE: 1.Ascending pharyngeal aery 2.Middle meningeal aery 3.Aery of pterygoid canal NOTES: Eustachian tube is also called auditory tube or pharyngotympanic tube Ref BDC volume3,sixth edition pg 237 