"introitus" 的定义和意义

What is "introitus"?

The introitus refers to the external opening of the vagina in the female reproductive system. It serves as the entrance to the vaginal canal, allowing for the insertion of tampons, sexual intercourse, and the passage of menstrual blood. The introitus is surrounded by the labia minora and labia majora, providing protection and maintaining the integrity of the vaginal canal. It is a dynamic and elastic structure that can expand during sexual arousal and childbirth, accommodating various needs and functions of the female reproductive system.