Henry Gray (18251861). Anatomy of the Human Body. 1918.
Section of the human esophagus. (From a drawing by V. Horsley.) Moderately magnified. The section is transverse and from near the middle of the gullet. a. Fibrous covering. b. Divided fibers of longitudinal muscular coat. c. Transverse muscular fibers. d. Submucous or areolar layer. e. Muscularis mucosæ. f. Mucous membrane, with vessels and part of a lymphoid nodule. g. Stratified epithelial lining. h. Mucous gland. i. Gland duct. m. Striated muscular fibers cut across.