The columnar epithelium consists of elongated cells which are placed side by side like columns with slightly roader outer free surfaces.
The nuclei of these cells are elongated and lie near the bases of the cells.
Some cells of this epithelium contain mucus and look like goblets. These are called goblet cells.
The epithelium containing goblet cells i.e. mucus-secreting cells along with the underlying connective tissue is called mucosa. These are found in the stomach and intestine.
Location
Simple columnar epithelium lines the stomach, intestine, gallbladder and bile ducts.
The columnar epithelium also forms gastric glands, intestinal glands etc.
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Simple columnar epithelium forms gastric glands, intestinal glands etc.