. Cunningham's Text-book of anatomy. Anatomy. 374 THE MUSCULAE SYSTEM. humerus, to be inserted into a well-marked V-shaped impression above the radial groove (Fig. 336, p. 376). The insertion is partly united with the tendon of the pectoralis major. The most anterior part of the deltoid muscle is formed of parallel fibres, not uncommonly separ- LEVATOR , p , i ', -n ate from the rest ol rhomboideus minor the muscle at their origin from the cla- vicle. These fibres may be continuous Rhomboid- , J eus major with the trapezius over the clavicle. The most posterior part arises by a fasci
. Cunningham's Text-book of anatomy. Anatomy. 374 THE MUSCULAE SYSTEM. humerus, to be inserted into a well-marked V-shaped impression above the radial groove (Fig. 336, p. 376). The insertion is partly united with the tendon of the pectoralis major. The most anterior part of the deltoid muscle is formed of parallel fibres, not uncommonly separ- LEVATOR , p , i ', -n ate from the rest ol rhomboideus minor the muscle at their origin from the cla- vicle. These fibres may be continuous Rhomboid- , J eus major with the trapezius over the clavicle. The most posterior part arises by a fascial origin from sp!â¢s :t4Hl fcne 8Pine of tiie | m scapula and the I g fascia over the in- % ° fraspinatus muscle. These portions are teres major attached respect- minor -"'^j wr ively to the front Triangular space an(J ^qJj. 0f the main tendon of in- Quadnlateral space . ml . , sertion. lhe mter- triceps brachu mediate fibres are (Lateral head) multi-pennate, attached above and below to three or four septal tendons, headT"8 (medial which extend for a variable distance downwards and upwards from the I Badialnene origin and insertion of the muscle. triceps brachu The deltoid is superficial in its (longhead) whole extent, and forms the pro- minence of the shoulder. Its an- terior border is separated from the pectoralis major by a narrow in- terval, in which the cephalic vein and deltoid branch of the thoraco- Brachio-radialis ⢠t . i n m1 t acromial artery are placed. Ihe deep surface of the muscle, separated from the capsule of the shoulder-joint extensor carpi by a large bursa, is related to (1) RADIALIS longus -â¢' °. _ ⢠, -I â j 1 the coracoid process, associated with triceps brachu which are the coraco-acromial liga- ' (tendon of insertion) ment, and the attachments of the pectoralis minor, the coracobrachi- T Extensor carpi t ij_t_ i Pi_i [radialis brevis aus, and the short head of the biceps bracbii; (2) the capsule of Â¥01ecran01' the s
Size: 1129px × 2214px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
