Image d'archive à partir de la page 198 de la cyclopaedia de l'anatomie et. La cyclopaedia de l'anatomie et physiologie0402cyclopdiaofana todd Année : 1849 Diagramme du gubernaculum et testicule précédent pour sa descente. 1, le rein ; 2, le testicule ; 3, 3, le péritoine ' 4, canal déférent passant vers le bas dans le bassin par le côté de la vessie ; 5, la vessie ; 6, l'anneau d'abdo- minal ; 7, 7, 8 de Poupart ; ligament pubien, por- tion de Le crémaster ; 9, les fibres de Le crémaster découlant de Poupart's ; ligament 10, partie de l'guberuaculuui fixée à la partie inférieure de la SCRO- tum. Entre la cinquième et sixième m

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Archive image from page 198 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 Diagram of the gubernaculum and testicle previous to its descent. 1, the kidney; 2, the testicle; 3, 3, the peritoneum ' 4, vas deferens passing down into the pelvis by the side of the bladder; 5, the bladder; 6, the abdo- minal ring; 7, 7, Poupart's ligament; 8, pubic por- tion of the cremaster; 9, fibres of the cremaster arising from Poupart's ligament; 10, portion of the guberuaculuui attached to the bottom of the scro- tum. Between the fifth and sixth month of foetal existence, sometimes later, the testicle begins to move from its situation near the kidney towards the ring, which it usually reaches about the seventh month. During the eighth month it generally traverses the inguinal canal, and by the end of the ninth arrives at the bottom of the scrotum, in which situation it is commonly found at birth. The testicle, both during its passage to the ring and through the inguinal canal, carries along with it its original peritoneal coat, adhering by the reflexion of this membrane, during the whole of its course to the parts behind, in the same manner as whilst situated below the kidney. The testicle therefore does not pass directly and abruptly into a pouch prepared to receive it, but carries the peritoneum with it, con- tinuing to be connected to the parts behind by the reflexion of the membrane, between the folds of which the vessels and nerves join the gland. In the passage of the testicle from the abdomen to the bottom of the scrotum, the gubernaculum, including its peritoneal investment and muscular fibres, undergoes the same change as that which takes place in certain of the rodcntia at the access of the season of sexual excitement ; the muscle of the testicle is gradually everted, until, when the transition is completed, it forms a mus- cular envelope external to the process of peri- toneum, which surrounds the gland and

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