Upper oesophageal sphincter is made up of___ and lower oesophageal sphincter of ___.
Match the following sphincters of with their respective location.
Column I (Sphincters)Column II (Location)i. Ileo-cecal Sphinctera. anus.ii. Anal Sphincterb. between ileum and Caecum.iii. Pyloric Sphincterc. between stomach and small intestine.iv. Lower Esophageal Sphincterd. between Esophagus and Stomach.