puborectalis muscle

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pu·bo·rec·ta·lis mus·cle

(pyū'bō-rek-tā'lis mŭs'ĕl)
The medial part of the musculus levator ani (pubococcygeus muscle) that passes from the body of the pubis around the anus to form a muscular sling at the level of the anorectal junction; it contracts to increase the perineal flexure during a peristalsis to maintain fecal continence and relaxes to allow defecation.
Synonym(s): musculus puborectalis [TA] , puborectal muscle.

puborectalis muscle

Pelvic muscle, part of levator ani. Origin: back surface of pubis. Insertion: joins other levator ani muscles forming a bowl shaped diaphragm, encircles anal canal, and attaches to sacrum and coccyx. Nerve: inferior rectal and sacral (S4). Action: supports pelvis, holds anal canal at right angle to rectum.
See also: muscle


Christian W., German anatomist, 1831-1892.
Braune canal - the birth canal formed by the uterine cavity, dilated cervix, vagina, and vulva.
Braune muscle - Synonym(s): puborectalis muscle
Braune valve - a fold of mucous membrane at the junction of the esophagus with the stomach.
References in periodicals archive ?
3] where the author measured the age related variations in thickness of external anal sphincter and puborectalis muscles in normal children.
Is paradoxical contraction of puborectalis muscle of functional importance?
The external anal sphincter and puborectalis muscle transiently contract, an act known as the closing reflex, causing the anus and rectum to rise back up and forward to return to their normal position.
Evaluation of the activity of the puborectalis muscle can be assessed using sEMG.