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 Dorsal Cutaneous Branch of First Posterior Intercostal Artery (Left)
Cardiovascular System

Lateral Dorsal Cutaneous Branch of First Posterior Intercostal Artery (Left)

Ramus cutaneus dorsalis lateralis arteriae intercostalis posterioris primae

Read more

Origin

The lateral and medial dorsal cutaneous branches arise from the dorsal branches of posterior intercostal arteries, as it bifurcates when it passes through the costotransverse foramen (the space between the superior transverse ligament and the neck of the rib).

Course

The lateral dorsal cutaneous branches follow the lateral branches of the posterior rami of the corresponding thoracic nerves. They travel between the superior costotransverse and intertransverse ligaments (or muscle when present), and between the longissimus and iliocostalis muscles, piercing the latissimus dorsi to become superficial.

Branches

There are no named branches.

Supplied Structures

Along their course, the lateral dorsal cutaneous branches of the posterior intercostal arteries supply the longissimus thoracis, iliocostalis, and latissimus dorsi muscles, as well as the overlying fascia and skin.

Learn more about this topic from other Elsevier products

Artery

ScienceDirect image

When the artery is occluded blood is forced through the collateral vessels, drastically increasing fluid shear stress and triggering an inflammatory response which drives vessel remodeling.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy