32-The Male Genital System

The male genital system develops from key embryonic structures, including the genital ridge and the Wolffian and Müllerian ducts. The genital ridge, influenced by the migration of gonocytes from the vitelline vesicle, forms the anlage of the gonads, which will become either testes or ovaries. The Wolffian ducts, present from the pronephros stage, differentiate in males into the vas deferens and the ureter, while the Müllerian duct regresses, leaving remnants such as the prostatic utricle.

Testicular descent is a crucial process, orchestrated by the gubernaculum testis, which pulls the testes downwards. This movement is influenced by the differential growth of surrounding tissues and the contraction of the inguinal ligament. Concurrently, hepatic movement plays an essential role in the organization of the peritoneal cavity and urogenital development. The prostate, meanwhile, develops from the prostatic utricle, a remnant of the Müllerian duct, integrating epithelial tissues of endodermal and mesenchymal origin. This complex process illustrates the interconnection of embryonic structures in the formation of the male genital system.