The clitoris and the labia minora are both erogenous areas in the vulva. Females have a thick, elongated clitoris that protrudes from the labia of the vulva. This can cause inflammation of the vulva and vagina. The vagina is a sheath-like canal that extends from the vulva to the cervix. This causes vaginal discharge and itchiness of the vulva. More rarely, it may appear on the genital area, such as the vulva or scrotum. Parts of the vulva, especially the clitoris, are erogenous zones. For females, the mons pubis forms the anterior portion of the vulva. Irritation and itching of the vulva is called pruritus vulvae. Pelvic floor muscles support the structures of the vulva. The word "vulva" is Latin for "womb". Sexual arousal results in a number of physical changes in the vulva. Blood supply to the vulva comes from the three pudendal arteries. "Summary Offences Act" is not limited to "penis" or "vulva". During menopause, hormone levels decrease, which causes changes in the vulva known as vulvovaginal atrophy.