Female external reproductive organs as a group are called the vulva, a series of structures located around the vaginal orifice that participate directly in sexual intercourse.
The mound of Venus is one of these structures. It is a mound of soft, fatty tissue covered in pubic hair as of puberty. It protects the internal organs because the hair forms a net that traps potential pathogen agents. This region also cushions the contact that takes place between men and women during sexual relations. This zone is highly innervated; this is why stimulating it eases arousal.
The labia majora or external labia are two fleshy folds of skin that surround and protect the more delicate organs of the vulva, like the clitoris, the urethral orifice and the vaginal orifice.
They are located from the border of the mound of Venus to the junction with the skin of the thigh. Farther down, there are two narrow folds that are a bit smaller called labia minora. They surround the vaginal orifice and the urinary meatus. Both structures are made up of spongy erectile tissue, this is why their texture is so elastic and dilates so easily during sexual intercourse.
The clitoris is a small organ found at the end the labia minora (at the junction of both folds) that meets with the mound of Venus. It is cylindrical and measures around one centimeter long. It is the most sensitive of all the female sex organs because it contains lots of nerve endings. It is made up of two cavernous bodies that meet at one end, forming the clitoral glans. During erection, both bodies harden and increase in size as a consequence of sexual arousal.