Thoracoacromial artery

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Artery: Thoracoacromial artery
Axillary branches.png
Branches of axillary artery, including thoracoacromial artery
Gray524.png
The scapular and circumflex arteries. (Thoracoacromial branch of thoracoacromial labeled at upper right.)
Latin arteria thoracoacromialis
Gray's subject #149 588
Source axillary artery   
Dorlands
/ Elsevier
    
a_62/12159712

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Overview

The thoracoacromial artery (acromiothoracic artery; thoracic axis) is a short trunk, which arises from the forepart of the axillary artery, its origin being generally overlapped by the upper edge of the Pectoralis minor.

Branches

Projecting forward to the upper border of the Pectoralis minor, it pierces the coracoclavicular fascia and divides into four branches—pectoral, acromial, clavicular, and deltoid.

Branch Description
Pectoral branch Descends between the two Pectorales, and is distributed to them and to the mamma, anastomosing with the intercostal branches of the internal mammary and with the lateral thoracic.
Acromial branch Runs lateralward over the coracoid process and under the Deltoideus, to which it gives branches; it then pierces that muscle and ends on the acromion in an arterial network formed by branches from the transverse scapular, thoracoacromial, and posterior humeral circumflex arteries.
Clavicular branch Runs upward and medialward to the sternoclavicular joint, supplying this articulation, and the Subclavius.
Deltoid (humeral) branch Often arising with the acromial, it crosses over the Pectoralis minor and passes in the same groove as the cephalic vein, between the Pectoralis major and Deltoideus, and gives branches to both muscles.

Mnemonic

One mnemonic used to remember the four branches is "Cadavers Are Dead People".[1]

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.



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