This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages without signing in

Pulmonary artery (right, anatomy)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The right pulmonary artery originates at the division of the pulmonary trunk anterior to the left main bronchus. It is longer than the left main pulmonary artery. For a short distance it is ensheathed within the pericardium as it passes laterally and slightly inferiorly within the pericardial sac. Its relations within the right lung root are:

  • posterior and superior:
    • right principal bronchus
    • oesophagus
  • superior:
    • medially: carina
    • laterally: right azygous vein arching over to superior vena cava
  • anterior:
    • laterally: superior vena cava
    • medially: arch of aorta

About a centimetre distal to its origin within the lung root, the right pulmonary artery gives off its first branch to the superior lobe. This passes superolaterally in tandem with the superior lobe bronchus.

At the hilum, the main branch of the right pulmonary artery continues inferiorly. Within the hilum, it is anterior to the bronchi and superoposterior to the veins. It gives off branches to the middle lobe at the intersection of oblique and horizontal fissures within the lung parenchyma. Finally, it continues inferiorly to supply the segments of the right inferior lobe.

The pulmonary artery ramifies with the bronchial tree eventually to form capillaries within the walls of individual alveoli.


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.