الفهرس 
EMPRAYOLOGYof conginitalOnly 14 pages are availabe for public view
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Abstract
In the fifth to sixth week of gestation, the gonads appear on the venteromedial surface of the urogenital ridge. The trunk of the embryo rapidly elongates resulting in descent of the gonad. At about 10 weeks, it becomes located close to groin. At 3 month, it is situated close to the internal inguinal ring. This process is called “Internal Phase of the gonadal descent. (Fig. i-a).
In the males, the lower pole of the testis lies near vaginal process, which is a peritoneal protrusion, at the level of internal ring. The sac evagenates through the ring and the testes begin their phase of external descent following the path of gubernaculum.
Between the 7th and 9th month the testes reach the scrotum.
The vaginal sac loses its communication with peritoneal cavity shortly before or at time of birth. The processus vaginalis between the level of internal ring and upper level scrotum is obilitrated and becomes fibrous cord. (Fig. 1-b).