Actions inhibit defecation Dorlands
/Elsevier m_22/12550328 | Latin musculus puborectalis TA A04.5.04.007 | |
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Origin lower part of the pubic symphysis, superior fascia of the urogenital diaphragm Nerve S3, S4. levator ani nerve | ||
The fibers which form a sling for the rectum are named the Puborectalis.
They arise from the lower part of the pubic symphysis, and from the superior fascia of the urogenital diaphragm.
They meet with the corresponding fibers of the opposite side around the lower part of the rectum, and form for it a strong sling. Relaxation increases the angle between rectum and anus, allowing defecation in conjunction with relaxation of the internal and external anal sphincters.
Puborectalis is part of the levator ani muscle.
References
Puborectalis muscle Wikipedia(Text) CC BY-SA