. The anatomy of the domestic animals . Veterinary anatomy. 350 THE MUSCLES OF THE OX of the hip and the lumbo-dorsal fascia.) The aponeurosis is intimately united with the abdominal tunic, and does not detach a femoral lamina. The obliquus abdominis intemus is more developed and has an additional origin from the lumbo-dorsal fascia. The aponeurosis blends with that of the external oblique near the linea alba, and detaches a layer which assists in the for- mation of the internal sheath of the rectus. The rectus abdominis arises on the lateral border of the sternum as far for- ward as the third
. The anatomy of the domestic animals . Veterinary anatomy. 350 THE MUSCLES OF THE OX of the hip and the lumbo-dorsal fascia.) The aponeurosis is intimately united with the abdominal tunic, and does not detach a femoral lamina. The obliquus abdominis intemus is more developed and has an additional origin from the lumbo-dorsal fascia. The aponeurosis blends with that of the external oblique near the linea alba, and detaches a layer which assists in the for- mation of the internal sheath of the rectus. The rectus abdominis arises on the lateral border of the sternum as far for- ward as the third costal cartilage. The two muscles are separated, except near the pelvis, by an interval varjdng from two to four inches (ca. 5 to 10 cm.), so that this part of the abdominal wall is entirely fibrous. (The umbilicus is in a trans- verse plane through the third lumbar vertebra.) There are five tendinous inscrip- tions, at the third of which is a foramen for the passage of the subcutaneous ab- dominal vein. The prepubic tendon has, in addition to lateral branches inserted. Fig. 304,—Deeper Mttscles of Neck, Shoulder, and Thorax of Ox. c', Cleido-occipitalis muscle; d, sterno-cephalicus; /, /', long and lateral heads of triceps; g, superficial pectoral muscle; h, h', deep pectoral muscle; i, i\ serratus ventralis; k, latissimus dorsi; I, obliquus abdominis externus; v\ biceps brachii; w, splenitis; x, rhomboideus; y, longissimus capitis et atlantis; 2, supraspinatus; z', infraspinatus; 2", tendon of insertion of e'; J', cartilage of scapula; ^, tuberosity of spine of scapula; 3, acromion; 5, lateral tuberosity of humerus; 6', deltoid tuberosity; S, olecranon; 26, transverse processes of cervical vertebrge; S7, posterior auricular muscles: X, wing of atlas. (After EUeuberger-Baum, Anat. fiir Kiinstler.) into the ilio-pectineal eminences, a strong attachment to the median common ten- don of the adductors of the thigh, so that the abdominal wall is strongly retracted and alrao
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