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Descent of the testis

The layers of the abdominal wall involved in the descent of the testis are:
  • Peritoneum - forming the processus vaginalis, a diverticulum of the peritoneal cavity
  • Transversalis fascia - forming deep inguinal ring and internal spermatic fascia
  • Transversus abdominis - helping to form the conjoint tendon
  • Internal abdominal oblique - forming the falx inguinalis, conjoint tendon, and contributes the cremaster muscle and fascia
  • External abdominal oblique - forming the superficial inguinal ring and providing its deep fascia as the external spermatic fascia
  • Skin - with a smooth muscular subcutaneous layer called tunica dartos scroti