<prompt> Nucleus ambiguus is present atBase of ponsMidbrain, at level of superior colliculusMidbrain, at level of inferior colliculusLateral medulla  <response>: The nucleus ambiguus is found in the lateral medulla; it gives rise to the SVE Special visceral efferent fibers components of cranial nerves IX and X. fig:- crossection at the level of medullaupper pa 