SEXUAL RESPONSE: STAGES OF THE SEXUAL CY...

During the Plateau Phase, the penis undergoes further vaso-congestion and becomes bigger. The glans penis turns reddish purple in colour in fair males but this is not noticeable in dark skins. The Orgasmic Phase when the ejaculation takes place. It results from contractions of the various muscles in the perineal region, the urethra, and the bulbospongiosus. The corpora cavernosa and the corpus spongiosum are hollow cylinders which contain no muscles, but merely fill up with blood to permit erection of the penis. The base of the penis is securely anchored into the pelvic...