EM 017 Small Intestine

MICROGRAPH

NAME

EM 017 Small Intestine

TISSUE

Rat Small Intestine

IMAGE SIZE

4,445 x 5,417 pixels
92 MB

FILE SIZES

23,581 KB (grayscale)
24,467 KB (color)

MAGNIFICATION

Unknown

PIXEL SIZE

4.781 nm

SOURCE

Stanley L. Erlandsen
University of Minnesota
Minneapolis, MN

CONTACT

Questions or comments should be sent to
tcbrelje@gmail.com

This web site is owned and operated by:

T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455

Version 4.2

© 2005-2019.
T. Clark Brelje and Robert L. Sorenson.
All rights reserved.

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EM 017 Small Intestine

Small Intestine

The small intestine is lined with a simple columnar epithelium with goblet cells.

Goblet Cell (center; dark green) - secrete mucins (the major components of mucus).

Secretion Granules (purple) - large, densely packed in the apical region of the cell.
Golgi Apparatus (yellow) - well-developed in this secretory cell.
Endoplasmic Reticulum (cyan) - abundant in the basal region of the cell.

Surface Absorptive cells (enterocytes; light green) - transport molecules from the intestinal lumen across the epithelium.

Microvilli (green) - thin extensions that increase the surface area of the apical membrane.
Terminal Bar - junctional complex of tight junctions (zonula occludens), zonula adherens and desmosomes (maculae adherens).
Mitochondria (red) - provide energy for the transport of molecules.

The lateral plasma membranes of adjacent cells have extensive interdigitations.

Basal Lamina (dark purple) - thin, fuzzy line that separates the epithelium from the underlying connective tissue. A network of reticular collagen IV fibrils.