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CHAPTER 15 - LIVER AND GALLBLADDER
Histology Guide
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MICROGRAPH

NAME
EM 229 Gallbladder
TISSUE
Gallbladder
(rat)
IMAGE SIZE
8,455 x 9,498 pixels
230 MB
FILE SIZES
49,837 KB (grayscale)
51,168 KB (color)
MAGNIFICATION
Unknown
PIXEL SIZE
48.01 nm
SOURCE
Stanley L. Erlandsen
Department of Genetics, Cell Biology and Development
School of Medicine
University of Minnesota
Minneapolis, MN

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Robert L. Sorenson, Ph.D.

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University of Minnesota
Department of Genetics, Cell Biology and Development
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EM 229 Gallbladder

Gallbladder

Scanning electron micrograph (SEM) of the wall of the gallbladder at low magnification.

A distinctive feature of the gallbladder are of the mucosa that extend into the lumen. Unlike elsewhere in the gastrointestinal tract, it has a mucosa without a surrounding muscularis mucosae or submucosa.

  • (blue) - transport water across the epithelium
    • Microvilli (light blue) - cover the apical surface (individual microvilli can be distinguished)
    • No goblet cells
  • (yellow) - loose connective tissue that supports the epithelium
  • (muscularis externa; purple) - circular, longitudinal and oblique smooth muscle fibers without distinct layers
  • Outer layer - varies depending on location
    • Adventitia (grayscale) - regions attached to the liver.
    • - unattached region of connective tissue
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