Anatomy and Functions of Pelvic Floor Muscles Quiz

The ischiocavernosus muscle is responsible for aiding in erection by maintaining penile rigidity during sexual activity. The other mentioned muscles have different functions within the pelvic region.

The bulbospongiosus muscle is responsible for aiding in ejaculation by forcing semen out of the urethra and also aids in the closing off of the urethra to prevent urine from mixing with semen during ejaculation. The other muscle options listed do not have these specific functions related to ejaculation.

The superficial transversus perinei is a muscle located in the perineum, responsible for supporting the pelvic floor.

The levator ani is a broad, thin muscle that supports the pelvic organs and helps maintain continence.

The gluteus maximus is the largest muscle in the human body and is located in the buttocks. It plays a key role in various movements such as hip extension and external rotation.

The external anal sphincter is the muscle that controls the release of feces from the rectum. Pelvic floor muscles, transverse abdominis, and diaphragm are not directly involved in the process of defecation.

The ischiocavernosus is responsible for aiding in maintaining an erection by compressing the dorsal vein of the penis to limit the venous outflow of blood. The other muscles listed do not play a role in this function.

The correct answer is 'bulbospongiosus', which is a muscle surrounding the bulb of the penis. The other options - pubococcygeus, external oblique, and sternocleidomastoid - are muscles in different parts of the body and do not specifically surround the bulb of the penis.

The superficial transversus perinei is a muscle located in the pelvic floor, specifically in the perineal region.

The levator ani muscle forms the pelvic floor and plays a crucial role in supporting pelvic organs and maintaining continence.

The gluteus maximus is the largest muscle in the human body. It is located in the buttocks and is responsible for movement of the hip and thigh.

The external anal sphincter is a muscle that surrounds the opening of the anus and controls the passage of feces. It is under voluntary control, unlike the internal anal sphincter which is involuntary.