Digestive system esophagus

Esophagus is a [blank_start]muscular organ[blank_end] responsible for [blank_start]transport of bolus[blank_end] from [blank_start]mouth to stomach[blank_end].

The greatest part of the esophagus lies in the abdominal cavity.

The surface epithelium of esophagus is

The lamina propria of esophagus is [blank_start]loose CT[blank_end].

The muscularis mucosae of esophagus is [blank_start]not well developed[blank_end] except at the [blank_start]lower third[blank_end].

The muscularis mucosae is well developed at upper third of esophagus.

Esophagus submucosa is formed of [blank_start]dense fibroelastic CT[blank_end].

[blank_start]Submucosal esophageal gland[blank_end] are found along the entire esophageal length in submucosa.

Musculosa of esophagus: Upper third - [blank_start]striated muscles[blank_end] Middle third - [blank_start]mixture of striated[blank_end] & [blank_start]smooth muscles[blank_end] Lower third - [blank_start]smooth muscle fibers[blank_end]

Adventitia of esophagus is formed of [blank_start]loose areolar CT[blank_end].

The terminal end of esophagus is covered by [blank_start]mesothelium[blank_end] ([blank_start]serosa[blank_end]).

The outer layer of esophagus is formed of adventitia only.

Identify picture below