Ex midwife here. Vulva only means the external female genitalia, so encompasses clitoris, clitoral hood, labia minora, introitus (entrance to the vagina). Forgotten if it includes anything else, I did say I am exMW - the urethra is enclosed within, obvs the labia majora are the outer aspect. There is something called the 'vestibule', can't recall if that is the same as the introitus or not, but is also wonderfully home-like. Think I may get the downstairs maid to dust mine out too, Mamaryllis. Chuck the flowers away. The clit isn't usually involved in delivery unless you get a tear leading up to it (ouch), labia minora can also tear. It does drive me potty the way people now think vagina = vulva when it only refers to the passage from the cervix to the introitus.