Watch video Lab Demo - Prosection: SPA Ligation, Pterygomaxillary Space & Vidian Foramina Ian Humphreys, DO online without registration, duration 10 minute 02 second in high hd quality. This video was added by user Seattle Science Foundation 13 March 2017, don't forget to share it with your friends and acquaintances, it has been viewed on our site 6 thousand once and liked it 70 people.