. Anatomy, descriptive and applied. Anatomy. 458 THE MUSCLES AND FASCIjE of origin from the sternum pass down to the lowermost part of this superficial lamina of the tendon and extend as low as the tendon of the Deltoid and join with it. The deef lamina of the tendon receives the attachment of the lower half of the sternal portion and the deeper part of the muscle from the costal cartilages. These deep fibres, and particularly those from the lower costal cartilages ascend, the higher turning backward successively behind the superficial and upper ones, so that the tendon appears to be twisted.
. Anatomy, descriptive and applied. Anatomy. 458 THE MUSCLES AND FASCIjE of origin from the sternum pass down to the lowermost part of this superficial lamina of the tendon and extend as low as the tendon of the Deltoid and join with it. The deef lamina of the tendon receives the attachment of the lower half of the sternal portion and the deeper part of the muscle from the costal cartilages. These deep fibres, and particularly those from the lower costal cartilages ascend, the higher turning backward successively behind the superficial and upper ones, so that the tendon appears to be twisted. The deep lamina reaches higher on the humerus than the superficial one, and from it an expansion is given ofl^ which covers the bicipital groove and blends with the capsule of the shoulder-joint. From the deepest fibres of this lamina at its insertion an expansion is given off which lines the bicipital groove of the humerus, while from the lower border of the tendon a third expansion passes downward to the fascia of the arm. Between the posterior surface of the tendon of the Great pectoral and the ^terior surface of the long head of the Biceps there is usually a bursa (bursa m. pectoralis majoris).. IC BRANCH O^ ACIC NERVE PECTORALIS MAJOR ^. Fig. 346.—Costocoracoid membrane. Relations.—By its swperficial surface, with the integument, the superficial fascia, the Platysma, some of the branches of the descending cervical nerves, the mammary gland, and the deep fascia; by its deep surface: its thoracic portion, with the sternum, the ribs and costal cartilages, the costocoracoid membrane, the Subclavius, Pectoralis minor, Serratus magnus, and the Intercostals; its axillary portion forms the anterior wall of the axillary space, and covers the axillary vessels and nerves, the Biceps brachii and Coracobrachialis muscles. Its upper harder lies parallel with the Deltoid, from which it is separated by a slight interspace in which lie the cephalic vein and humeral branch of the acromi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
