. Cunningham's Text-book de l'anatomie. L'anatomie. Le DEFEKENT D'AIR. 1291 épine iliaque supérieure, il entre dans l'abdomen. La distance entre le point où le cordon entre dans le canal inguinal au point où il laisse entrer l'abdomen est d'environ un pouce et demi. En passant de la voie sous-cutanée à l'anneau inguinal abdominale le canal déférent, de concert avec les autres structures de l'spermaticus funiculus, repose sur la partie supérieure de la surface rainurée du ligament inguinal, et est placé derrière l'aponévrose de l'oblique externe et certaines fibres du obliqu interne
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. Cunningham's Text-book of anatomy. Anatomy. THE DEFEKENT DUCT. 1291 superior iliac spine, it enters the abdomen. The distance between the point where the cord enters the inguinal canal to the point where it leaves it to enter the abdomen is about one and a half inches. While passing from the subcutaneous to the abdominal inguinal ring the ductus deferens, together with the other structures of the funiculus spermaticus, rests upon the upper grooved surface of the inguinal ligament, and is placed behind the aponeurosis of the external oblique and some of the lower fibres of the internal oblique muscle. Erom before backwards the duct rests, in the first instance, upon the falx aponeurotica or con- joined tendon of the internal oblique and transversus abdominis muscles, and farther laterally upon the fascia transversalis. Above the funiculus are some arching fibres of the internal oblique muscle, which enter the falx. As the ductus deferens leaves the inguinal canal by the abdominal inguinal ring, it turns round the inferior Branches of hypogastric artery Right ureter Obturator artery Nerve cord from hypogastric plexus External iliac vessels. Sacro-genital fold Obliterated umbilical artery (lig. umbilicale) Plica vesicalis transversa Vesical arteries Ductus deferens Paravesical peritoneal fossa Fig. 1009.—Median Section of the Pelvis in an Adult Male. The coils of small intestine and colon which lay within the pelvis have been lifted out in order to give a view of the side wall of the pelvic cavity. epigastric artery on its lateral and posterior aspect. Completely changing the direction of its course, the duct now runs for a short distance backwards, medially, and upwards, beneath the peritoneum, to a point one and a half to two inches from the pubic tubercle, where it crosses the ilio-pectineal line and enters the pelvis. In this part of its course the duct usually lies at first in front of the external iliac vessels, and then in the floor of a little triangular fo
