Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Elsevier
Publish with us
Lateral Thoracic Artery
Cardiovascular System

Lateral Thoracic Artery

Arteria thoracica lateralis

Read more

Origin

The lateral thoracic artery arises from the second part of the axillary artery. The axillary artery is divided into three parts, depending on the arteries location to the pectoralis minor muscle. Sometimes, the lateral thoracic artery may arise from a common trunk with the thoracoacromial artery (10%) or from the subscapular artery (10%) (Tubbs, Shoja and Loukas, 2016).

Course

From its origin, the lateral thoracic artery descends along the lateral thoracic wall, deep to the pectoralis major and near the lateral border of the pectoralis minor. It continues as far as the fifth intercostal space.

Branches

The lateral thoracic artery gives rise to the lateral mammary branches.

Supplied Structures

The lateral thoracic artery supplies the serratus anterior, pectoralis major and minor, and subscapularis muscles, axillary lymph nodes, and contributes to the vasculature of the mammary gland.

References

Tubbs, R. S., Shoja, M. M. and Loukas, M. (2016) Bergman's Comprehensive Encyclopedia of Human Anatomic Variation. Wiley.

Learn more about this topic from other Elsevier products

Lateral Thoracic Artery

ScienceDirect image

The lateral thoracic artery, which also arises from the second part of the axillary artery, follows the lateral border of the pectoralis minor muscle and supplies the lateral part of the pectoralis major muscle.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy