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A D V E R T I S E M E N T
A D V E R T I S E M E N T
The inside of the inguinal area is traversed by several lumbar plexus nerves: iliohypogastric, ilioinguinal, genitofemoral and lateral femoral cutaneous. The iliopsoas muscle mass fills most of the space between inguinal ligament and iliopubic ramus. The iliac vessels occupy the medial part of the space. The two deep flank muscles, the internal oblique and transversus have inferior origins around the iliac crest and onto the inguinal ligament.
A D V E R T I S E M E N T
The transversalis fascia is the critical layer of inguinal anatomy. It is the boundary of the abdominal cavity and forms the inguinal floor. It forms the deep inguinal ring and extends outside the ring as the internal spermatic fascia covering of the spermatic cord. Medial to the psoas muscle, the transversalis fascia extends down around the femoral vessels as the femoral sheath. Between the two evaginations of transversalis fascia is the thickened band of iliopubic tract.
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A D V E R T I S E M E N T
The internal spermatic vessels and vas enter the deep inguinal ring lateral to the inferior epigastric vessels. The iliac vessels pass into the femoral sheath between iliopubic tract and pectineal ligament, leaving the potential space of the femoral canal medial to the vein within the femoral sheath. The medial umbilical ligament, the remnant of the umbilical artery, lies lateral to the bladder and serves to identify its margin.
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This page was last modified on 3/1/1999.
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