Thoracoacromial artery

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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.)
Details
Source Axillary artery
Identifiers
Latin arteria thoracoacromialis
TA98 A12.2.09.005
TA2 4619
FMA 22671
Anatomical terminology

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

Contents

Structure

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. [1]

BranchDescription
Pectoral branchDescends between the two pectorales, and is distributed to them and to the mamma, anastomosing with the intercostal branches of the internal thoracic artery and with the lateral thoracic.
Acromial branchRuns laterally 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 (a.k.a. suprascapular), thoracoacromial, and posterior humeral circumflex arteries.
Clavicular branchRuns upward and medialward to the sternoclavicular joint, supplying this articulation, and the subclavius.
Deltoid (humeral) branchOften 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.

Additional images

Related Research Articles

<span class="mw-page-title-main">Pectoralis minor</span> Human chest muscle that protracts the shoulder

Pectoralis minor muscle is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body. It arises from ribs III-V; it inserts onto the coracoid process of the scapula. It is innervated by the medial pectoral nerve. Its function is to stabilise the scapula by holding it fast in position against the chest wall.

<span class="mw-page-title-main">Axilla</span> Area of the human body beneath the joint between arm and torso

The axilla is the area on the human body directly under the shoulder joint. It includes the axillary space, an anatomical space within the shoulder girdle between the arm and the thoracic cage, bounded superiorly by the imaginary plane between the superior borders of the first rib, clavicle and scapula, medially by the serratus anterior muscle and thoracolumbar fascia, anteriorly by the pectoral muscles and posteriorly by the subscapularis, teres major and latissimus dorsi muscle.

<span class="mw-page-title-main">Axillary artery</span> Large blood vessel bringing oxygenated blood to the thorax

In human anatomy, the axillary artery is a large blood vessel that conveys oxygenated blood to the lateral aspect of the thorax, the axilla (armpit) and the upper limb. Its origin is at the lateral margin of the first rib, before which it is called the subclavian artery.

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In human anatomy, the inferior mesenteric artery (IMA) is the third main branch of the abdominal aorta and arises at the level of L3, supplying the large intestine from the distal transverse colon to the upper part of the anal canal. The regions supplied by the IMA are the descending colon, the sigmoid colon, and part of the rectum.

<span class="mw-page-title-main">Lateral thoracic artery</span> Large blood vessel

In the human body, the lateral thoracic artery is a blood vessel that supplies oxygenated blood to approximately one-third of the lateral structures of the thorax and breast.

<span class="mw-page-title-main">Medial pectoral nerve</span>

The medial pectoral nerve is (typically) a branch of the medial cord of the brachial plexus and is derived from spinal nerve roots C8-T1. It provides motor innervation to the pectoralis minor muscle, and the lower half of the pectoralis major muscle. It runs along the inferior border of the pectoralis minor muscle.

<span class="mw-page-title-main">Circumflex scapular artery</span> Artery of the upper body

The circumflex scapular artery is a branch of the subscapular artery and part of the scapular anastomoses.

<span class="mw-page-title-main">Left gastroepiploic artery</span>

The left gastroepiploic artery, the largest branch of the splenic artery, runs from left to right about a finger's breadth or more from the greater curvature of the stomach, between the layers of the greater omentum, and anastomoses with the right gastroepiploic.

<span class="mw-page-title-main">Right colic artery</span> Artery supplying the colon

The right colic artery is an artery of the abdomen, a branch of the superior mesenteric artery supplying the ascending colon. It divides into two terminal branches - an ascending branch and a descending branch - which form anastomoses with the middle colic artery, and ileocolic artery (respectively).

<span class="mw-page-title-main">Left colic artery</span> Artery

The left colic artery is a branch of the inferior mesenteric artery distributed to the descending colon, and left part of the transverse colon. It ends by dividing into an ascending branch and a descending branch; the terminal branches of the two branches go on to form anastomoses with the middle colic artery, and a sigmoid artery (respectively).

<span class="mw-page-title-main">Right gastric artery</span> Blood vessel of the human digestive system

The right gastric artery usually arises from the proper hepatic artery. It descends to the pyloric end of the stomach before passing from right to left along its lesser curvature, supplying it with branches, and finally anastomosing with the left gastric artery.

<span class="mw-page-title-main">Lateral pectoral nerve</span>

The lateral pectoral nerve arises from the lateral cord of the brachial plexus, and through it from the C5-7.

<span class="mw-page-title-main">Suprascapular artery</span> Artery of the neck

The suprascapular artery is a branch of the thyrocervical trunk on the neck.

<span class="mw-page-title-main">Clavipectoral fascia</span>

The clavipectoral fascia is a strong fascia situated under cover of the clavicular portion of the pectoralis major.

<span class="mw-page-title-main">Superior thoracic artery</span>

The superior thoracic artery is a small artery located near the armpit. It usually originates from the axillary artery, but can instead originate from the thoracoacromial artery. It supplies the pectoralis minor and major muscles, and the chest wall.

<span class="mw-page-title-main">Pectoral fascia</span>

The pectoral fascia is a thin lamina, covering the surface of the pectoralis major, and sending numerous prolongations between its fasciculi: it is attached, in the middle line, to the front of the sternum; above, to the clavicle; laterally and below it is continuous with the fascia of the shoulder, axilla, and thorax.

<span class="mw-page-title-main">Muscular triangle</span>

The inferior carotid triangle, is bounded, in front, by the median line of the neck from the hyoid bone to the sternum; behind, by the anterior margin of the sternocleidomastoid; above, by the superior belly of the omohyoid.

<span class="mw-page-title-main">Thoracodorsal artery</span> Large blood vessel

The thoracodorsal artery is a branch of the subscapular artery. It passes inferior-ward upon the suface of the serratus anterior muscle. It is accompanied by the thoracodorsal nerve along its source. It also supplies the latissimus dorsi.

<span class="mw-page-title-main">Intercostal arteries</span> Arteries supplying the space between the ribs

The intercostal arteries are a group of arteries passing within an intercostal space. There are 9 anterior and 11 posterior intercostal arteries on each side of the body. The anterior intercostal arteries are branches of the internal thoracic artery and its terminal branch - the musculophrenic artery. The posterior intercostal arteries are branches of the supreme intercostal artery and thoracic aorta.

<span class="mw-page-title-main">Clavipectoral triangle</span>

The clavipectoral triangle is an anatomical region found in humans and other animals. It is bordered by the following structures:

References

PD-icon.svgThis article incorporates text in the public domain from page 588 of the 20th edition of Gray's Anatomy (1918)

  1. Stern, Jack (2009-05-04). "Clinically Oriented Anatomy by Keith L. Moore, Arthur F. Dalley, and Anne M. Agur". Clinical Anatomy. 22 (5): 635–635. doi:10.1002/ca.20801. ISSN   0897-3806.