The penis is rich in sensory nerves that help with sexual stimulation, arousal, and erections. Penises appear in different sizes and shapes, with a median size of just more than 5 inches. Some penises are circumcised, while others are uncircumcised. The root contains the two muscles (ischiocavernosus and bulbospongiosus muscles) https://fernandofhfec.losblogos.com/34524373/penis-an-overview