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CHAPTER 12 - EXOCRINE GLANDS
Histology Guide
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MICROGRAPH

NAME
EM 208 Acinar Cell
TISSUE
Pancreas
(rat)
IMAGE SIZE
9,031 x 10,433 pixels
359 MB
FILE SIZES
84,209 KB (grayscale)
85,417 KB (color)
MAGNIFICATION
Unknown
PIXEL SIZE
1.722 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 208 Acinar Cell

Exocrine Pancreas

Transmission electron micrograph (TEM) of an acinar cell in the exocrine pancreas. Acini are formed from a single layer of pyramidal acinar cells surrounding a central lumen that leads into pancreatic ducts.

The lumen of this acini is seen to the upper right.

  • (blue) - located in the base of the cell
    • (purple)
  • (purple) - large secretion granules near their narrow apical region
    • Contain inactive precursors of digestive enzymes
  • Golgi Apparatus - prominent in these secretory cells, but it is not visible in this section
  • (red)
  • (cyan) - large amounts of rough endoplasmic reticulum fill the base of the cell and around the secretion granules
    • Densely packed parallel cisternae
  • Cytoplasm (green)

The (purple) separates each acinus from the underlying thin layer of indistinct connective tissue.

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