Which folds of membrane are located inside the labia majora and are hairless?

The labia minora are the inner folds of tissue located inside the labia majora, which are the outer, larger folds of the vulva. The labia minora are distinctively hairless, unlike the labia majora, which are covered with pubic hair after puberty. The primary role of the labia minora is to protect the vaginal and urethral openings and to play a role in sexual arousal due to the presence of sensitive nerve endings. Understanding the anatomy of these structures is important in the context of reproductive health and human anatomy. The other options refer to different parts of the female genitalia or regions; for instance, the vulva encompasses the entire external genitalia, while the perineum is the area between the vulva and the anus.