Diagram to show the course of the esophagus.

Course of the Esophagus

Diagram to show the course of the esophagus.

The lower part of the pharynx and the upper part of the esophagus have been slit up from behind, and the mucous membrane removed to show the muscular fibers. The two longitudinal bands are seen coming round to the front to be attached by a common tendon to the upper border of the cricoid cartilage.

Pharynx and Esophagus

The lower part of the pharynx and the upper part of the esophagus have been slit up from behind, and…