And most people don't know this, but here's another part: the vestibule. The area that contains the entrance to the vagina and the entrance to the urethra is known as the vestibule. So vulva, vestibule, vagina. Too bad the labia had to start with a different letter! lol

And the clit isn't just the little "button" you see. That's just the glans, the head. It extends upward under the hood, and also in two "legs" under the intralabial sulci. Those are the depressions between inner and outer lips. The legs are called cruces, I think.

Yes, I do have medical background. LOL!

This concludes my lesson.