. Cunningham's Text-book of anatomy. Anatomy. 476 THE MUSCULAK SYSTEM. THE MUSCLES OF THE ABDOMINAL WALL. The muscles of the abdominal wall are in three series—lateral, anterior, and posterior. The lateral muscles of the abdominal wall comprise the obliquus externus abdominis, obliquus internus abdominis, and transversus abdominis. M. Obliquus Externus Abdominis.—The obliquus externus abdominis is a broad thin sheet of muscle, with an origin from the lateral surfaces of the lower eight ribs, by slips which interdigitate with the serratus anterior and latissimus Obliquus externus abdominis (ref
. Cunningham's Text-book of anatomy. Anatomy. 476 THE MUSCULAK SYSTEM. THE MUSCLES OF THE ABDOMINAL WALL. The muscles of the abdominal wall are in three series—lateral, anterior, and posterior. The lateral muscles of the abdominal wall comprise the obliquus externus abdominis, obliquus internus abdominis, and transversus abdominis. M. Obliquus Externus Abdominis.—The obliquus externus abdominis is a broad thin sheet of muscle, with an origin from the lateral surfaces of the lower eight ribs, by slips which interdigitate with the serratus anterior and latissimus Obliquus externus abdominis (reflected) Spermatic funiculus--! Intercolumnar fascia". Obliquus externus abdominis Obliquus internus abdominis Anterior superior 'iliac spine _Transversus 'abdominis , Obliquus internus abdominis (reflected) Aponeurosis of obliquus externus (reflected) Abdominal inguinal ring Spermatic funiculus and infundibuliform fascia Fascia tranversalis Falx aponeuraotica in- guinalis Fossa ovalis ( saphen- ous opening) •Great saphenous vein Fig. 422.—The Dissection of the Ixguina l Canal. dorsi muscles. The muscular fibres radiate downwards and forwards, the lowest fibres passing vertically downwards. The lower and posterior part of the muscle is inserted directly by fleshy fibres into the external lip of the iliac crest in its anterior half or two-thirds (Fig. 369, p. 415). The rest of the muscle is inserted into an extensive triangular aponeurosis covering the anterior abdominal wall. This aponeurosis is broader below than above; it is united with part of the aponeurosis of the obliquus internus in the superior three-fourths of its extent, to form the anterior layer of the sheath of the rectus muscle. It thus gains an attachment, above to the xiphoid process, below to the symphysis pubis, and by its intermediate fibres to the linea alba, a broad inter- lacing band of fibres about half an inch in width which occupies the median plane of the anterior abdominal wall in its
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
