Right main bronchus 2599296 214130647 2008-05-22T06:10:17Z Jfdwolff 46555 Reverted edits by [[Special:Contributions/66.182.229.31|66.182.229.31]] ([[User talk:66.182.229.31|talk]]) to last version by Mikael Häggström {{Infobox Anatomy | Name = {{PAGENAME}} | Latin = bronchus principalis dexter | GraySubject = 237 | GrayPage = 1085 | Image = Illu_conducting_passages.jpg | Caption = Conducting passages. | Image2 = Gray961.png | Caption2 = Front view of cartilages of larynx, trachea, and bronchi. | System = | MeshName = | MeshNumber = | DorlandsPre = b_23 | DorlandsSuf = 12198348 | }} The '''right main bronchus''' (or '''right primary bronchus''', or '''right principal bronchus''') is a [[bronchus]] of the [[respiratory system]]. It is wider, shorter, and more vertical in direction than the [[Left main bronchus|left]]. It is about 2.5 cm. long, and enters the [[right lung]] nearly opposite the fifth [[thoracic vertebra]]. The [[azygos vein]] arches over it from behind; and the right pulmonary artery lies at first below and then in front of it. About 2 cm. from its commencement it gives off a branch to the upper lobe of the right lung. This is termed the eparterial branch of the bronchus, because it arises above the right [[pulmonary artery]]. The bronchus now passes below the artery, and is known as the hyparterial branch; it divides into two branches for the middle and lower lobes. ==Additional images== <gallery> Image:Lungs anatomy.png|Anatomy of lungs. Image:Gray622.png|The tracheobronchial lymph glands. </gallery> ==External links== * {{eMedicineDictionary|right+main+bronchus}} * {{SUNYAnatomyFigs|19|08|01}} - "The divisions of the bronchus." {{Gray's}} {{respiratory-stub}} {{Lung}}