Simple columnar epithelium

Here,  the jejunum is thrown into circular folds with numerous epithelial crypts, containing a core of lamina lamina propria. Goblet cells which secrete mucus are scattered around the epithelial layers and the crypts (which are glands) having white, cotton wool appearance. At the end of the epithelial layer is a prominently stained muscularis mucosae. Then a highly vascularised submucosa follows. The muscularis externa is the most external structure containing two layers of muscles- circular which is inner and longitudinal muscle,  which is external.


Simple columnar epithelium explanatory video

 

 

 

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Electronic School of Medicine
Creator: Oluwole Ogunranti