- 1. UES
- [The structure at the pharyngoesophageal junction consisting chiefly of the cricopharyngeus muscle. It normally occludes the lumen of the ESOPHAGUS, except during SWALLOWING. ( MSH )] (UMLS (NCI) C1451819) Upper Esophageal Sphincter;
=Body Part, Organ, or Organ Component; ; | |