Page 553 - Atlas of Histology with Functional Correlations

FIGURE 14.2 ■ Wall of the upper esophagus (transverse section). Stain:
hematoxylin and eosin. Low magnification.

FIGURE 14.3 | Upper Esophagus (Transverse

Section)

The next two histologic sections illustrate the difference between the upper and

the lower esophageal wall.

The mucosa of the upper esophagus (as in Fig. 14.2) consists of a stratified
squamous nonkeratinized epithelium (1), a connective tissue lamina propria
(2), and smooth muscle muscularis mucosae (3) (transverse plane). A

lymphatic nodule (4) is visible in the lamina propria (2). In the submucosa (7)
are adipose cells and mucous acini of esophageal glands proper (6) and their
excretory ducts (5). The muscularis externa consists of an inner circular layer

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