Very busy secretory epithelia tend to be simple columnar.

Here is epithelium from the lower stomach. It has to produce mucin to keep things moving. Think about the alternative.

Mucin-producing cells often present easy-to-see borders, since the carbohydrate-rich pale-staining mucin contrasts with the protein-rich pink-staining cell surfaces.

This is stomach.

With your study partners, find:

• the simple columnar epithelium

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Kansas City University of Medicine and Biosciences