Assertion: esophagus's layer | /r/MadeOf | inner circular
Facets:
Source sentences:
text: The wall of the esophagus is formed by four layers: the mucosal membrane lining the inside of the esophagus; the submucosa below the mucous membrane housing the esophageal glands, the muscular layer consisting of an inner circular and an outer longitudinal layer, and the adventitia, which is formed by fibrous tissue covering the cervical and thoracic parts of the esophagus, while in the abdominal part the outside of the esophagus is covered by the peritoneum instead of adventitia.