Notes on the structure of a simple columnar eipthelium

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Notes on the structure of a simple columnar eipthelium

As the very name indicates this epithelium consists of columnar cells that are longer (taller) than broad. The tissue is made up of a single layer of cells. The outlines of the cells appear polygonal in a surface view. Each cell has a flattened and an oval end.

There is a single nucleus in each cell which is elongated and usually located either in the centre or a little away from the centre. Usually some mucous secreting cells called Goblet cells are found in between the columnar epithelial cells that line the stomach and intestine.

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The goblet cells have vacoule filled with mucous. The epi­thelial tissue containing the mucous secreting cells along with the under­lying supporting connective tissue is usually refered to as the mucous membrane or mucosa.

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