Inguinal canal (English)

The inguinal canal commences at the deep inguinal ring, located at the midpoint between the anterior superior iliac spine and pubic tubercle. It continues through the anterior abdominal muscles and terminates at the superficial inguinal ring (a slitlike opening in the aponeurosis of the external abdominal oblique muscle). The canal is bounded from four aspects. The roof is formed by the internal oblique and transversus abdominis muscles. The anterior wall is derived from the aponeuroses of the internal and external abdominal oblique muscles. The floor is formed by the inguinal and lacunar ligaments (not shown). The posterior wall is formed by the transversalis fascia and inguinal falx (conjoint tendon of the internal abdominal oblique and transversus abdominis muscles).The image depicts the spermatic cord traversing the inguinal canal. The cord is enveloped by three fascial layers, derived from the musculofascial structures of the abdominal wall. From superficial to deep, they are: external spermatic fascia (derived from the aponeurosis of the external abdominal oblique muscle), cremasteric muscle/fascia (derived from the internal abdominal oblique muscle and its fascia), internal spermatic fascia (derived from the transversalis fascia) The cord itself transmits several structures to and from the testes: testicular and cremasteric arteries as well as the artery of ductus deferens, pampiniform venous plexus, ilioinguinal nerve and genital branch of genitofemoral nerve, ductus deferens.