<prompt> Regarding Schatzkis ring the true statement is:Has skeletal muscleLocated at upper esophagusLocated at lower esophagusContain all layers of esophagus  <response>: Schatzkis ring is a lower esophageal mucosal ring May result from GERD Asymptomatic 10 Cause dysphagia Ref: Bailey Love, 25th Edition, Pages 1041 