Eparterial bronchus

The eparterial bronchus (right superior lobar bronchus) is a branch of the right main bronchus given off about 2.5 cm from the bifurcation of the trachea. This branch supplies the superior lobe of the right lung and is the most superior of all secondary bronchi. It arises above the level of the right pulmonary artery, and for this reason is named the eparterial bronchus.[1] All other distributions falling below the pulmonary artery are termed hyparterial.

Eparterial bronchus
Mediastinal surface of right lung. (Eparterial bronchus labeled at center right.)
Front view of cartilages of larynx, trachea, and bronchi. (Eparterial bronchus not labeled, but visible at center left.)
Details
Identifiers
LatinBronchus lobaris superior dexter
TA98A06.4.02.002
TA23238
FMA7397
Anatomical terminology

The eparterial bronchus is the only secondary bronchus with a specific name apart from the name of its corresponding lobe.

Name

The classification of eparterial and hyparterial is attributed to Swiss anatomist and anthropologist Christoph Theodor Aeby, and is central to his model of the anatomical lung. He presented this model in a monograph titled, "Der Bronchialbaum der Säugethiere und des Menschen, nebst Bemerkungen über den Bronchialbaum der Vögel und Reptilien".[2]

References

This article incorporates text in the public domain from page 1097 of the 20th edition of Gray's Anatomy (1918)

  1. Sabri, Youssriah Yahia; Yamamah, Hassan Gamal Abd El Nasser; Taymour, Takeya Ahmed (2018-12-01). "Role of multislice computed tomography in evaluation of congenital tracheobronchial branching anomalies". The Egyptian Journal of Radiology and Nuclear Medicine. 49 (4): 1003–1008. doi:10.1016/j.ejrnm.2018.06.017. ISSN 0378-603X.
  2. Aeby, Chr (Christoph); Royal College of Surgeons of England (1880). Der Bronchialbaum der Säugethiere und des Menschen : nebst Bemerkungen über den Bronchialbaum der Vögel und Reptilien. Royal College of Surgeons of England. Leipzig : Wilhelm Engelmann.
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