Archive image from page 737 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( '04 THE NERVOUS SYSTEM. Short subscapular Lower subscapular Axillary nerve thoracic nerve alone. These nerves supply the £>ecforafo's minor muscle, and, after piercing it, supply the sternal part of the pectoralis major. The inferior nerve, in many cases, sends its branches to the pectoralis major round the inferior border of the pectoralis minor, and it may supply on its way the axillary arches, if present. These two branches are derived—the superi
Archive image from page 737 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( '04 THE NERVOUS SYSTEM. Short subscapular Lower subscapular Axillary nerve thoracic nerve alone. These nerves supply the £>ecforafo's minor muscle, and, after piercing it, supply the sternal part of the pectoralis major. The inferior nerve, in many cases, sends its branches to the pectoralis major round the inferior border of the pectoralis minor, and it may supply on its way the axillary arches, if present. These two branches are derived—the superior from the seventh and eighth cervical, and first thoracic nerves; the inferior from the eighth cervical and first thoracic nerves. The pectoral muscles are thus both supplied by the two anterior thoracic nerves. The clavicular fibres of the pectoralis major are innervated by the fifth and sixth nerves; the sternal fibres, from above downwards, by the fifth, sixth, seventh, and eighth cervical, and first thoracic nerves; and the pectoralis minor is supplied by the seventh and eighth cervical, and first thoracic nerves. Nervus Musculocutaneus. The musculo - cutaneous nerve takes origin from the lateral cord of the plexus, from the fifth and sixth cervical nerves (Fig. 614). The nerve to the coracobrachialis muscle, arising from the seventh or sixth and seventh nerves, is usually associated with it. Separating from the lateral head of the median nerve, the musculo-cutaneous nerve lies at first between the coraco- brachialis muscle and the axillary artery. It is then directed distally between the two parts of the coracobrachi- alis, and passes between the biceps and brachialis muscles, to the bend of the elbow. It pierces the deep fascia over the front of the elbow, between the biceps and brachioradialis, and terminates as the lateral cutaneous nerve for the supply of the lateral aspect of the forearm. In its course it may send a branch under the biceps to join the median nerv
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