Thoracoacromial Artery

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Information About Thoracoacromial Artery

	CATEGORIES ABOUT THORACOACROMIAL ARTERY
	arteries
	upper limb anatomy
	thorax
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	GraySubject	149
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	Caption	The Scapular and Circumflex arteries
	BranchFrom	Axillary Artery
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	Vein
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The thoracoacromial artery (a. thoracoacromialis; 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 . Projecting forward to the upper border of this muscle, it pierces the Coracoclavicular Fascia and divides into four branches—pectoral, acromial, clavicular, and deltoid.

• The 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 .

• The 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.

• The clavicular branch runs upward and medialward to the Sternoclavicular Joint , supplying this articulation, and the Subclavius .

• The deltoid (humeral) branch, often arising with the acromial, 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.

One Mnemonic used to remember the four branches is "Cadavers '''A'''re '''D'''ead '''P'''eople".


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