[Innervation of the human testes studied with electron microscopy]

The testes of 35 men from 2 to 61 years old have been studied by electron microscopy with the aim of stressing the presence and the topographic localization of the efferent nervous fibres. The researches have confirmed that the innervation of the male gonad shows three components: a) vasomotor, b) peritubular, c) interstitial. The results obtained point out the very important role that the vegetative nervous system plays in the regulation of the gonadal functions.