Practical anatomy.

  • Christopher Heath
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Practical anatomy. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    embraced by the two heads of the median nerve, which itself lies for a short distance in front of the artery; behind, it lies upon the lower part of the subscapularis, the tendon of the latissimus dorsi, and a small portion of the teres major muscle, together with the musculo-spiral and circumflex nerves ; to its inner side is the axillary vein, with the inner head of the median nerve (for a short dis- tance), the ulnar, the internal cutaneous and lesser internal cutaneous (Wrisberg) nerves; to the outer side is the coraco-brachialis muscle, with the outer head of the median at first, but lower down the entire nerve, and also the ex- ternal cutaneous nerve, until it pierces the coraco-brachialis. The branches of this portion are the Subscapular, Anterior Circumflex, and Posterior Circumflex. Branches of the Axillary Artery (Fig. 3).1— 1. The superior thoracic (3) is a small branch supplying the side of the chest about the first and second ribs, and anastomosing with the intercostal arteries. 2. The acromio-thoracic (thoracica-humeraria; thoracic axis) (1) is a large branch arising from the artery at the upper border of the pectoralis minor, and immediately piercing the costo-coracoid membrane to divide into three sets of branches. One set runs forward to supply the pectoralis major, a second backwards to the acromion pro- cess and shoulder, and the third downwards in the groove between the pectoralis major and deltoid by the side of the cephalic vein. 3. The long thoracic (5) runs along the lower border of the pectoralis minor to the side of the chest, where it sup- plies the mamma (and is hence sometimes called the ex- ternal mammary artery). It anastomoses with the internal mammary, intercostal, and subscapular branches. 4. The alar thoracic (3) is a small branch to the axillary glands. It very seldom arises directly from the axillaiy, but generally from one of the other branches. 5. The subscapular (15) is a large branch which runs along the lower border of the subscapularis muscle to the side of the chest with the long subscapular nerve, and then supplies the adjacent parts, and anastomoses with the long thoracic artery. About an inch from its origin this artery gives off a large branch, the dorsalis scapulae [17], which 1 The branches of the Axillary Artery may be kept in mind by the •word SALASAP; thus: Superior thoraoic, Acromio-thoracio, Long thoracic, Alar thoracic, Subscapular, Anterior, and Posterior circumflex.