Erect Penis Diagram
Flaccid and erect penis. The penis contains two cylindrical, sponge-like structures (corpora cavernosa). When a male becomes sexually aroused, nerve impulses increase While results vary slightly across reputable studies, the consensus is that the mean human penis, when erect, is in the range 12.9–15 cm (5.1–5.9 in) in length WebMD’s Penis Anatomy Page provides a […]