22 



THE UPPER EXTREMITY 



twigs are distributed to the integument on the upper part of 

 the medial aspect of the arm. 



Posterior circumflex artery Anterior circumflex artery 



Subscapular artery 

 Musculo-cutaneous nerve 

 Axillary nerve (O.T. circumflex) ; 



Cephalic vein 

 Acrpmial artery 

 Lateral anterior thoracic nerve 

 Lateral cord of brachial plexus 

 Thoraco-acromial artery , 

 Axillary artery, ist pait , ,\ 



Axillary vein 



Pectoralis major 

 f Coraco-brachialis 

 '' f Biceps brachii 

 (short head) 



y o ; Basilic vein 

 y\ *. Brachial artery 

 \ Median nerve 



toral branch 



of thoraco- 



omial artery, 



Ulterior branch of a 

 al cutaneous nerve 



I Fascial band connecting 1 

 I dorsi with long head of tri 



Medial anti-brachial cutane< 



Medial brachial cutaneous nerve 

 \ Tcres major 

 Radial nerve (O.T. musculo-spiral) 



Circumflex'artery of scapula (O.T. 

 dorsalis scapulae) 

 Lower subscapular nerve 



Subscapularis muscle 



Posterior division of lateral cutaneous nerve 

 Latissimus dorsi 

 ! Thoraco-dorsal nerve (O. T. middle subscapular) 



im-mm ( Long thoracic nerve 



Intercosto-brachial nerve 

 Lateral thoracic artery 

 (O.T. long thoracic) 



FIG. 10. The contents of the Axillary Space exposed by the reflection of the 

 Pectoralis Major and the subjacent fascia and the removal of the fat and 

 the lymph glands. 



Arteria Axillaris (The Axillary Artery) is the chief artery 

 of the upper limb. It commences as the continuation of the 

 subclavian artery, and enters the axilla at its apex, at the 

 lateral border of the first rib. It lies, for a short distance, 



