Vulva or external genitalia are the female accessory genital glands. Vulva has small depression in front of the anus called vestibule.

Vestibule contains following structure:

(i) Labia Majora : These are two outer skinny, moist hair covered folds forming the outer boundaries of the vulva. Anteriorly the two folds are joined to form monus pubis. A fleshy elevation above the labia is called mons veneris.

(ii) labia Minora: These are two thin, small, moist folds of connective tissue covered with skin. On stretching over the clitoris to form the prepuce and beneath in form frennulum. The smooth, almond shaped area into which opens the vagina and urethra between the labia minora is called the vestibule. 

(iii) Clitoris : It is capable of enlargement but serves no reproductive function.

(iv) Barthelin's Glands : These secretes clear viscous mucus containing alkaline fluid to lubricate the vulva and vagina during copulation.

(v) Perineum : It lies between the anus and vaginal arifice.