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CHAPTER 14 - GASTROINTESTINAL TRACT
Histology Guide
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MICROGRAPH

NAME
EM 031 Gastric Mucosa
TISSUE
Stomach
(rat)
IMAGE SIZE
8,776 x 5,720 pixels
191 MB
FILE SIZES
28,243 KB (grayscale)
27,383 KB (color)
MAGNIFICATION
Unknown
PIXEL SIZE
87.4 nm
SOURCE
Stanley L. Erlandsen
Department of Genetics, Cell Biology and Development
School of Medicine
University of Minnesota
Minneapolis, MN

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EM 031 Gastric Mucosa

Gastric Mucosa

Scanning electron micrograph (SEM) of a cross-section of the stomach wall.

The is covered by surface mucous cells. These cells produce a thick layer of mucus (light blue) that protects the epithelium from the acid and proteolytic enzymes in the stomach.

The is seen in cross-section at the edge of the specimen.

The epithelium forms deep invaginations:

  • - invaginations of the surface epithelium lined by surface mucous cells
  • - simple or branched tubular glands that extend from the base of gastric pits

The mucosa is composed of:

  • Simple Columnar Epithelium (purple)
  • Lamina Propria (yellow) - loose connective tissue found between the pits and glands
  • Muscularis Mucosae - narrow layer of smooth muscle at the base of the mucosa
    • Barely visible in the lower right corner
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