The bulbospongiosus is a muscle located in the pelvic region, primarily associated with the reproductive system. In males, it surrounds the base of the penis and helps in the expulsion of urine and semen. In females, it encircles the vaginal opening and contributes to clitoral erection and the contraction of the vaginal walls. This muscle is part of the superficial perineal space and plays a role in sexual function and urinary control. It is innervated by the pudendal nerve, which is crucial for its contraction and relaxation during various activities, including sexual arousal and childbirth.