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Stratified columnar epithelium
Details
ShapeMany layers of flat cells
Identifiers
THH2.00.02.0.02032
FMA45564
Anatomical terms of microanatomy

Stratified columnar epithelium is a rare type of epithelial tissue composed of column-shaped cells arranged in multiple layers. It is found in the conjunctiva, pharynx, anus, and male urethra. It also occurs in embryo.

Location

Stratified columnar epithelia are found in a variety of locations, including:

Embryology

Stratified columnar epithelium is initially present in parts of the gastrointestinal tract in utero, before being replaced with other types of epithelium. For example, by 8 weeks, it covers the lining of the stomach.[6][7] By 17 weeks, it is replaced by simple columnar epithelium.[6] This is also found in the fetal esophagus.[7]

Function

The cells function in secretion and protection.[8]

See also

References

  1. ^ Soni, Vandana; Pandey, Vikas; Tiwari, Rahul; Asati, Saket; Tekade, Rakesh K. (2019-01-01), Tekade, Rakesh K. (ed.), "Chapter 13 - Design and Evaluation of Ophthalmic Delivery Formulations", Basic Fundamentals of Drug Delivery, Advances in Pharmaceutical Product Development and Research, Academic Press, pp. 473–538, doi:10.1016/b978-0-12-817909-3.00013-3, ISBN 978-0-12-817909-3, retrieved 2020-11-29
  2. ^ Forrester, John V.; Dick, Andrew D.; McMenamin, Paul G.; Roberts, Fiona; Pearlman, Eric (2016-01-01), Forrester, John V.; Dick, Andrew D.; McMenamin, Paul G.; Roberts, Fiona (eds.), "Chapter 1 - Anatomy of the eye and orbit", The Eye (Fourth Edition), W.B. Saunders, pp. 1–102.e2, doi:10.1016/b978-0-7020-5554-6.00001-0, ISBN 978-0-7020-5554-6, retrieved 2020-11-29
  3. ^ a b c Cadwell, K.; Marchiando, A. M. (2016-01-01), "Function of Epithelial Barriers", in Bradshaw, Ralph A.; Stahl, Philip D. (eds.), Encyclopedia of Cell Biology, Waltham: Academic Press, pp. 687–694, doi:10.1016/b978-0-12-394447-4.30104-3, ISBN 978-0-12-394796-3, retrieved 2020-11-29
  4. ^ Gordon, Philip H. (2005-01-01), Fazio, Victor W.; Church, James M.; Delaney, Conor P. (eds.), "Anatomy and Physiology of the Anorectum", Current Therapy in Colon and Rectal Surgery (Second Edition), Philadelphia: Mosby, pp. 1–9, doi:10.1016/b978-1-55664-480-1.50006-x, ISBN 978-1-55664-480-1, retrieved 2020-11-29
  5. ^ Johnson, L.; Welsh, T. H.; Curley, K. O.; Johnston, C. E. (2010-01-01), McQueen, Charlene A. (ed.), "11.02 - Anatomy and Physiology of the Male Reproductive System and Potential Targets of Toxicants", Comprehensive Toxicology (Second Edition), Oxford: Elsevier, pp. 5–59, doi:10.1016/b978-0-08-046884-6.01102-7, ISBN 978-0-08-046884-6, retrieved 2020-11-29
  6. ^ a b Chandrasoma, Parakrama T.; DeMeester, Tom R. (2006-01-01), Chandrasoma, Parakrama T.; DeMeester, Tom R. (eds.), "CHAPTER 3 - Fetal Development of the Esophagus and Stomach", GERD, Burlington: Academic Press, pp. 41–63, doi:10.1016/b978-012369416-4/50003-0, ISBN 978-0-12-369416-4, retrieved 2020-11-29
  7. ^ a b Chandrasoma, Parakrama T. (2018), "Molecular Evolution of Esophageal Epithelial Metaplasia", GERD, Elsevier, pp. 457–478, doi:10.1016/b978-0-12-809855-4.00015-4, ISBN 978-0-12-809855-4, retrieved 2020-11-29
  8. ^ Tortora, Gerard J. (2017). Tortora's Principles of anatomy & physiology, global edition. Bryan Derrickson, Gerard J. Tortora. Hoboken, NJ. ISBN 978-1-119-40006-6. OCLC 1003252960.