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{{Infobox anatomy | Name = Simple columnar epithelium | Latin =simple columnar epithelium | Image = Normal gastric mucosa intermed mag.jpg | Caption = The [[stomach]wall, with simple columnar epithelium visible as a lining at the top. }}

A simple columnar epithelium is a columnar epithelium that is uni-layered. In humans, a simple columnar epithelium lines most organs of the digestive tract including the stomach, small intestine, and large intestine. Simple columnar epithelia line the uterus.

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StructureEdit

Simple columnar epithelium is further divided into two categories: ciliated and non-ciliated. The ciliated part of the simple columnar epithelium has tiny hairs which help move mucus and other substances up the respiratory tract.

LocationEdit

Non-ciliated types are found in the digestive tract. Ciliated types are found within bronchioles of the respiratory tract and in the oviduct of the female reproductive tract.

CiliatedEdit

Ciliated columnar epithelium moves mucus and other substances via cilia and is found in the upper respiratory tract, the Fallopian tubes, the uterus, and the central part of the spinal cord. They are the primary target of infection for "common cold viruses" such as coronaviruses, influenza virus and rhinoviruses.[citation needed] These viruses may kill the ciliated cells or stop the cilia beating. In either case, mucus builds up and forms a good site for secondary bacterial infections, resulting in mucus.[citation needed]

A ciliated columnar epithelium lines the lumen of the uterine tube, where currents generated by the cilia propel the egg cell toward the uterus.

Non-ciliatedEdit

This is found lining sections of the gastrointestinal tract and may be brush bordered.

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