Transverse perineal muscles

The superficial transverse perineal muscle, part of the transverse perineal muscles. Image from Gray's Anatomy.

The Transverse Perineal Muscles are a pair of small skeletal muscles that are part of the pelvic floor. They are situated in the perineum, the region between the pubic symphysis and the coccyx. The transverse perineal muscles consist of two parts: the superficial transverse perineal muscle and the deep transverse perineal muscle.

Anatomy

Superficial Transverse Perineal Muscle

The superficial transverse perineal muscle is a narrow muscular slip, which passes more or less transversely across the perineal space. It arises from the inner and forepart of the tuberosity of the ischium, and runs medially and forward to be inserted into the central tendinous point of the perineum, joining with the muscle of the opposite side, the bulbospongiosus muscle, and the levator ani.

Deep Transverse Perineal Muscle

The deep transverse perineal muscle is part of the deep perineal pouch. It arises from the inner side of the ischial tuberosity and is inserted into the central tendinous point of the perineum. It helps to stabilize the perineal body.

Function

The transverse perineal muscles play a crucial role in maintaining the integrity of the pelvic floor. They provide support to the pelvic organs and help in maintaining continence. During childbirth, they relax to allow the passage of the baby.

Clinical Significance

Damage to the transverse perineal muscles can lead to perineal tears during childbirth. This can result in long-term complications such as fecal incontinence and pelvic organ prolapse.

See Also

• Perineum
• Pelvic floor
• Perineal tear
• Fecal incontinence
• Pelvic organ prolapse