Puborectalis muscle

Puborectalis muscle is a part of the pelvic floor and a member of the levator ani group of muscles. It plays a crucial role in maintaining continence.

Anatomy[edit | edit source]

The puborectalis muscle originates from the pubic bone and loops around the rectum and anus, forming a sling. This sling is integral to the maintenance of the anorectal angle, which is important for continence.

Function[edit | edit source]

The primary function of the puborectalis muscle is to maintain the anorectal angle. This angle is a sharp turn between the rectum and the anus, which helps to maintain continence. When the puborectalis muscle contracts, it pulls the rectum forward, increasing the anorectal angle and aiding in fecal continence. During defecation, the puborectalis muscle relaxes, decreasing the anorectal angle and allowing for the passage of feces.

Clinical significance[edit | edit source]

Dysfunction of the puborectalis muscle can lead to conditions such as fecal incontinence and constipation. In some cases, biofeedback therapy can be used to retrain the muscle and improve symptoms.

See also[edit | edit source]

Puborectalis muscle Resources
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References[edit | edit source]

External links[edit | edit source]

Puborectalis muscle at the US National Library of Medicine Medical Subject Headings (MeSH)

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