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Tracheoesophageal septum

Embryological structure dividing the trachea from the oesophagus

Embryological structure dividing the trachea from the oesophagus

FieldValue
NameTracheoesophageal septum
Days26
PrecursorTracheoesophageal folds

The tracheoesophageal septum is an embryological structure. It is formed from the tracheoesophageal folds or ridges which fuse in the midline. It divides the oesophagus from the trachea during prenatal development. Developmental abnormalities can lead to a tracheoesophageal fistula.

Structure

The tracheoesophageal septum is formed from the tracheoesophageal folds laterally (longitudinal ridges), which fuse in the midline. It divides the oesophagus from the trachea. This is complete by 6 weeks of gestation. It divides the foregut tube: the laryngotracheal tube ventrally and oesophagus dorsally.

Function

The tracheoesophageal septum divides the oesophagus from the trachea during prenatal development.

Clinical significance

Developmental abnormalities of the tracheoesophageal septum can lead to a tracheoesophageal fistula. This may be caused by certain mutations of genes involved in its development. Other theories for the origin of tracheoesophageal fistula have been suggested. A laryngotracheal cleft is a related abnormality.

References

References

  1. [http://www.med.umich.edu/lrc/coursepages/M1/embryology/embryo/14respiratorysystem.htm Respiratory System]
  2. Bax, Klaas. (2010). "Ashcraft's Pediatric Surgery". [[Saunders (imprint).
  3. (2010). "Ashcraft's Pediatric Surgery". [[Saunders (imprint).
  4. (2017). "Fetal and Neonatal Physiology". [[Elsevier]].
  5. [http://www.med.mun.ca/anatomyts/digest/agutdev.htm Development of the Digestive System] {{Webarchive. link. (2007-11-23)
  6. "Esophageal Atresia and Tracheoesophageal Fistula - February 15, 1999 - American Academy of Family Physicians".
  7. Kulungowski, Ann M.. (2018). "Abernathy's Surgical Secrets". [[Elsevier]].
  8. (2011). "Pediatric Gastrointestinal and Liver Disease". [[Saunders (imprint).
  9. (2006). "Encyclopedia of Respiratory Medicine". [[Academic Press]].
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human-head-and-neck embryology-of-digestive-system
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