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Overview: Surface epithelium
The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x
![Sheet gland <p>The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-2-1-ping.png)
Sheet gland
The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x
![Mucin <p>The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-2-2-ping.png)
Mucin
The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x
![Nuclei <p>The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-2-3-ping.png)
Nuclei
The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x
![Basal part of cells <p>The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-2-4-ping.png)
Basal part of cells
The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x
![Lamina propria <p>The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-2-5-ping.png)
Lamina propria
The simple columnar epithelium lining the stomach is modified to form a sheet gland, with each cell in the sheet actively producing the mucus that protects the stomach from its acidic environment. Mucin accumulates in the apex of each cell while the cytoplasm and nucleus are squeezed into the slender stem of the cell. 1000x
![Gastric pit > <p>A gastric pit is formed by the invagination of the sheet gland into the lamina propria. The gastric pit serves as the duct for the gastric gland that opens at its base.</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-2-6-ping.png)
Gastric pit >
A gastric pit is formed by the invagination of the sheet gland into the lamina propria. The gastric pit serves as the duct for the gastric gland that opens at its base.