<prompt> Zenkers diveiculum is called asPrepharyngeal diveiculumPharyngobasilar diveiculumPharyngotympanic diveiculumHypopharyngeal diveiculum  <response>: Ans. is d i.e., Hypopharyngeal diveiculum Hypopharyngeal diveiculum or Zenkers diveiculum or pharyngeal pouchIt is a pulsion diveiculum where pharyngeal musoca herniates through the killians dehiscence, a weak area between two pas of the inferior constrictor.It is the most common esophageal diveiculum.The diveicula arises posteriorly in the midline of neck. The mouth of the diveicula is in the midline but the sacprojects laterally usually left laterally Zenkers diveicula are rarely seen below 30 yrs of age, most patients are over 50. 