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

Braune,

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 ?
Caption: FIGURE 6: Example of wrong indication to STARR operation: postoperative MR defecography in patient with persistent nonrelaxing puborectalis muscle (arrow), responsible of recurrent rectocele and ODS.
Is paradoxical contraction of puborectalis muscle of functional importance?
Pelvic floor dysfunction requires biofeedback, whereby a skilled pelvic floor therapist teaches a patient to relax the puborectalis muscle during defecation.
The anal canal high pressure zone is the result of the combined activity of the IAS, EAS and puborectalis muscles. The IAS is thought to be responsible for 85% of resting pressure.[1, 6] The EAS is not believed to contribute significantly to resting pressure, but in tandem with the puborectalis muscle is responsible for the squeezing pressure of the anal canal.
Neither the clinical research staff nor the patient knew the contents of the injections, but all women received a total of four--two at sites in the puborectalis muscle and two in the pubococcygeus muscle.
[6,7,8,9,10] With blind procedures such as abdominoperineal surgery, the pulled through intestine can be misplaced outside the puborectalis muscle. [4,5] Misplaced neorectum can be detected easily by CT and MRI which probably is the most straight forward clinical application of these modalities.
Muscles of the Pelvic Floor Origin Insertion Pelvic Floor Muscle Coccygeus Pelvic surface of Side of the coccyx and the ischial spine lower sacrum Levator ani (LA) Posterior surface Anococcygeal raphe of the body of the and coccyx pubis, arcus tendineus levator ani, ischial spine Layers of the Levator Ani Illiococcygeus Arcus tendineus Anococcygeal raphe (IC) levator ani, and and the coccyx the ischial spine (clinically called the levator plate) Pubococcygeus Posterior aspect Passes backward along (PC) of the superior the puborectalis muscle pubic ramis and inserts into the anococcygeal and the superior surface of the coccyx.