<prompt> Sympathetic root of otic ganglionPlexus around ICAPlexus around facial aeryPlexus around ophthalmic aeryPlexus around middle meningeal aery  <response>: ROOTS OF OTIC GANGLION: Sensory root is by auriculotemporal nerve Sympathetic root is by sympathetic plexus around middle meningeal aery Secretomotor root is by lesser petrosal nerve from tympanic plexus formed by tympanic branch of cranial nerve IX Motor root is by a branch from nerve to medial pterygoid Ref BDC volume 3,sixth edition pg 311 