. Cunningham's Text-book of anatomy. Anatomy. 480 THE MUSCULAE SYSTEM. Its lower fibres, arching over the spermatic cord, assist in forming, laterally, the anterior wall of the inguinal canal; medially, by means of the falx inguinalis, it helps to form the posterior wall of the canal. Its lowest fibres are continued into the cremaster muscle, which is prolonged along the spermatic cord through the inguinal canal. M. Cremaster.—The cremaster muscle forms an investment for the testis and sper- matic funiculus beneath the intercolumnar fascia. In the female it is more largely repre- sented by fas
. Cunningham's Text-book of anatomy. Anatomy. 480 THE MUSCULAE SYSTEM. Its lower fibres, arching over the spermatic cord, assist in forming, laterally, the anterior wall of the inguinal canal; medially, by means of the falx inguinalis, it helps to form the posterior wall of the canal. Its lowest fibres are continued into the cremaster muscle, which is prolonged along the spermatic cord through the inguinal canal. M. Cremaster.—The cremaster muscle forms an investment for the testis and sper- matic funiculus beneath the intercolumnar fascia. In the female it is more largely repre- sented by fascia than muscular fibres, and constitutes the cremasteric fascia. It may be said to have an origin from the inferior edge of the obliquus internus and the adjacent Aponeurosis of obliquus externus (reflected) Subcutaneous inguinal ring Lig- reflexum inguinale Inferior crus of ring Pubic fascia and suspensory liga- ment of penis. Obliquus externus abdominis Anterior superior ~" iliac spine ^f Obliquus internus ~~ abdominis Aponeurosis of ..obliquus externus (reflected) --- Spermatic funiculus Inguinal canal Falx aponeurotica inguinalis — Lig. reflexum inguinale Inferior crus of sub-) cutaneous inguinal ring (the inguinal ligament) Spermatic funiculus (cut) Fig. 426.—The Left Inguinal Canal. Structures seen on reflection of the Obliquus Externus. part of the inguinal ligament. Its fibres form loops over the spermatic funiculus and testis, the highest fibres getting an insertion into the pubic tubercle. M. Transversus Abdominis.—The transversus abdominis muscle arises (1) from the deep surface of the costal cartilages of the lower six ribs, interdigitating with the origins of the diaphragm; (2) from the lumbo-dorsal fascia; (3) from the anterior half of the medial lip of the iliac crest; and (4) from the lateral third of the inguinal ligament. The muscular fibres are directed for the most part horizontally forwards, and end in an aponeurosis which has a twofold insert
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
