File:Surgery, its principles and practice (1906) (14771081654).jpg

Identifier: surgeryitsprinci04keen (find matches)
Title: Surgery, its principles and practice
Year: 1906 (1900s)
Authors: Keen, William W. (William Williams), b. 1837 Da Costa, J. Chalmers (John Chalmers), 1863-1933, joint ed
Subjects: Surgery General Surgery
Publisher: Philadelphia and London : W. B. Saunders
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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Fig. 309.—Descent of the Testicle in Three Stages.The process of peritoneum and the gubernaculum testis preceding the testicle into the scrotum. gradually descends from its original position below the kidney, enters 592 SURGERY OF THE SCROTUM, TESTICLE, AND CORD. and passes through the inguinal canal, and the scrotum becomes itshabitat. The gubernaculum remains at the lower pole of the testicle asthe scrotal ligament. In this process of descent there is a period during which the peritonealpouch in the scrotum communicates freely with the general peritonealcavity. Normally that portion of the pouch in contact with the cord be-comes obliterated, leaving unobliterated simply the portion in front of thetestis, a portion which becomes the tunica vaginalis.
Text Appearing After Image:
Fig. 310.—The Descent of the Testicle.A, First position of testicle, below the kidney and behind the peritoneum ; B, testicle passingthrough the canal; C, testicle in scrotuixi, with open vaginal process, so that the general peri-toneal cavity and the future tunica vaginalis are still continuous; D, the vaginal process ob-structed, the general peritoneal cavity shut off from the tunica vaginalis. Failures in normal development may result in undescended or misplacedtesticle, congenital hernia, hydrocele of the cord, etc. UNDESCENDED AND MISPLACED TESTICLE. Undescended or misplaced testicle occurs in about one out of fivehundred individuals, as shown by the physical examination of recruitsfor the Austrian army. There are four types of undescended testicle: (a)Where the testicle is in the abdomen nearly in or about its original position;(b) where the testicle is at the internal ring; (c) where the testicle is in theinguinal canal; (d) where the testicle is external to the external ring

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