<prompt> Which is true about lesser petrosal nerve?Supplies secretory fibres to parotid glandExits from foramen spinosumBranch of facial nerveSynapse in pterygopalatine ganglion  <response>: The parasympathetic or secretomotor fibres of the parotid gland arise form the inferior salivatory nucleus, pass successively through the glossopharyngeal nerve,tympanic branch of glossopharyngeal nerevJacobson;s nerve, tympanic plexus and lesser petrosal nerve to relay in the otic ganglion.It exits through foramen ovale.It is a branch of tympanic plexus of tympanic branch of glossopharyngeal nerve.-Reference: Textbook of anatomy, head neck and brain Vishram Singh, 2nd edition, page no.142, 320,345 