Autopatrolled, Extended confirmed users, IP block exemptions, Pending changes reviewers, Rollbackers
m (→Pathology: consistent wording)
The urinary and reproductive organs are developed from the [[intermediate mesoderm]]. The permanent organs of the adult are preceded by a set of structures that are purely embryonic, and that, with the exception of the ducts, disappear almost entirely before the end of fetal life. These embryonic structures are on either side: the [[pronephros]], the [[mesonephros]] and the [[metanephros]] of the [[kidney]], and the [[Wolffian duct|Wolffian]] and [[Müllerian duct]]s of the [[sex organ]]. The pronephros disappears very early; the structural elements of the mesonephros mostly degenerate, but the [[gonad]] is developed in their place, with which the Wolffian duct remains as the duct in males, and the Müllerian as that of the female. Some of the tubules of the mesonephros form part of the permanent kidney.
To gain access to the body, [[pathogen]]s can penetrate mucous membranes lining the genitourinary tract.