Lower Third of the Esophagus

**Semantic type:** Body Location or Region

**Definition:** The lower one third of the esophagus in which the muscle layer is composed of muscle cells predominantly of the smooth type.

**Synonyms:** - ESOPHAGUS, LOWER THIRD - Esophageal; Distal - Lower Third - Lower Third of Esophagus - Lower third of esophagus - lower esophagus