An explanation for the shape of the human penis.
Bowman
Edwin A
EA
D005075:Biological Evolution; D003075:Coitus / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D010413:Penis / Q000033:anatomy & histology* / Q000502:physiology; D014621:Vagina / Q000033:anatomy & histology / Q000378:metabolism / Q000502:physiology