This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Bronchial arteries (anatomy)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The bronchial arteries supply nutrition to the parenchymal tissues of the lung between the carina and respiratory bronchioles. Along this route, they ramify with the bronchial tree in relation to the posterior aspect of the respective bronchi.

The origin of the main bronchial arteries depends on the side:

  • right:
    • usually only one artery
    • usually arises from the third right posterior intercostal artery, a branch of the aorta
    • rarely, may arise from thoracic aorta via the superior left bronchial artery
  • left:
    • usually two arteries
    • arise directly from aorta
    • superior left bronchial artery arises from anteromedial surface of the aortic arch just lateral to the carina and posterior to the left main bronchus
    • inferior left bronchial artery also arises from aorta parallel to its superior counterpart, but at a point that is inferior to the left main bronchus

Eventually, the bronchial arteries form capillaries which are continuous with either the pulmonary or bronchial veins.

Inflammation and thrombosis of the bronchial arteries may lead to gradual reactive enlargement of the bronchial tree. This may be associated with massive haemoptysis.

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed 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.


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.