Right main bronchus
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214130647
2008-05-22T06:10:17Z
Jfdwolff
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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}}