Advertisement

Male Perineum

  • Philip Thorek
Chapter
  • 366 Downloads

Abstract

In the embryo, the endodermal alimentary tract ends as a blind receptacle called the cloaca; this has an anterior diverticulum called the allantois (urachus). The mesonephric duct (adult vas deferens) grows caudally and opens into the anterior part of the cloaca (Fig. 551). The ureter develops as an outpouching of the mesonephric duct, the two for a period ending in one terminal duct. This common duct subsequently is absorbed into the wall of the bladder and the prostatic urethra, with the result that the ureter and the vas deferens eventually have separate openings. A mesodermal septum (urorectal septum) divides the cloaca into an anterior, urogenital part and a posterior, intestinal part. The cloaca has a sphincter, also divided into an anterior portion, which becomes the superficial transversus perineus, the bulbospongiosus, the ischiocavernosus and the urogenital diaphragm; the posterior part of the sphincter becomes the external sphincter ani.

Keywords

Sphincter Urethra Ischial Tuberosity Perineal Body Corpus Spongiosum Internal Pudendal Artery 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag New York, Inc. 1985

Authors and Affiliations

  • Philip Thorek
    • 1
    • 2
    • 3
    • 4
  1. 1.Thorek Hospital and Medical CenterChicagoUSA
  2. 2.Cook County Graduate School of MedicineUSA
  3. 3.University of Illinois College of MedicineUSA
  4. 4.American College of Chest PhysiciansUSA

Personalised recommendations