Fig. 83. Right Antecubital Space. Deep Layer. 



Skin, Superficial, and Deep Fasciae have been reinoi'ed. The following muscles 

 are exposed: Biceps with Bicipital Fascia, Brachialis Anticus , as far as it 

 is iiot-covered by Vessels and Nerves, the upper portion of the Superficial 

 Flexors which arise from the Internal Condyle, especially the Pronator Radii 

 Teres. The Brachio-Radialis ichicli has at its upper portion been drawn out- 

 wards, is also displayed. 



(As to the superficial nerves and veins which have been left in this spe- 

 cimen, see Fig. 82 text.) 



The Brachial Artery runs, accompanied by its Venae Comites, along the 

 inner border of the Biceps, towards the acute angle formed by the Pronator Radii 

 Teres and the Brachio-Radialis Muscles. In its course, — in front of the line of 

 the joint — it divides into the more superficial and smaller Radial, and the more 

 deeply placed and larger Ulnar Artery. Internal to the Brachial Artery (or rather 

 to its Internal ^'ena Comes) runs the Median Nerve which may, however, lie more 

 than 2/j,th inch internal to the vessel. This nerve pierces the Pronator Radii 

 Teres and supplies the Superficial and the Deep Flexors of the forearm, except 

 the Flexor Carpi Ulnaris and the inner portion of the Flexor Profundus Digitorum 

 (cf. Fig. 89). 



Along the outer border of the Biceps runs, at a deeper level, the Musculo- 

 Spiral Nerve; this Nerve lies between the Brachio-Radialis and Brachialis Anticus 

 Muscles (cf. Fig. 89). 



The mass of muscles arising from the Internal Condyle of the Humerus 

 and the portion of bone above it, and from the deep fascia of the forearm, sepa- 

 rates lower down into the Pronator Radii Teres which is inserted at the middle 

 of the outer border of the Radius, into the Flexor Carpi Radialis going to the 

 base of the 2nd Metacarpal Bone, into the Palmaris Longus, which is not always 

 present, and into the Flexor Carpi Ulnaris, which arises also from the Ulna. 



The lymphatic glands are described in Figs. 89 and 1 1 5 text. 



