The soft and muscular organ through which the urethra opens to the outside is called the penis. The base of the penis is called the glans penis, the hanging part is called the glans penis, the red umbrella-like tip is called the glans penis and the tip or foreskin is called the prepuce. Muslims and Jews had their foreskins cut off. The penis is made up of elastic muscles called corpora cavernosa and corpora spongiosum. It is stiff and straight when excited.
