Penile and Scrotal Vessels
Erectile dysfunction is the lack of copulative power due to failure to initiate an erection or to maintain an erection. The causes of erectile dysfunction include psychologic, neurophysiologic, endocrinologic, and vasculogenic factors. The vascular mechanisms involved in the process of erection are an increased arterial inflow and reduced venous outflow. The incidence of erectile dysfunction due to vascular causes increases with age. About 10% of men suffer from erectile dysfunction.
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