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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/08/01 04:23:32」(JST)

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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

^ Wallner C, Maas C, Dabhoiwala N, Lamers W, Deruiter M (2006). "Evidence for the innervation of the puborectalis muscle by the levator ani nerve.". Neurogastroenterol Motil 18 (12): 1121–2. doi:10.1111/j.1365-2982.2006.00846.x. PMID 17109696.

External links

pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University)
Anatomy photo:43:16-0200 at the SUNY Downstate Medical Center - "The Female Pelvis: Muscles of the Pelvic Diaphragm"
Anatomy photo:44:12-0200 at the SUNY Downstate Medical Center - "The Male Pelvis: Muscles of the Pelvic Diaphragm"

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English Journal

A comparison of the technical and oncologic validity between robot-assisted and conventional open abdominoperineal resection.

Kim JC1, Kwak JY, Yoon YS, Park IJ, Kim CW.
International journal of colorectal disease.Int J Colorectal Dis.2014 Aug;29(8):961-9. doi: 10.1007/s00384-014-1916-9. Epub 2014 Jun 10.
PURPOSE: This study was to ascertain whether a robot-assisted (RA) approach to APR might facilitate a cylindrical APR by enabling a deeper pelvic dissection during an abdominal approach, concurrently comparing the feasibility and short-term oncologic outcomes.METHODS: Forty-eight consecutive patient
PMID 24913254

CORPUS--novel COmplete Reconstruction of the Posterior Urethral Support after robotic radical prostatectomy: preliminary data of very early continence recovery.

Dal Moro F1, Crestani A2, Valotto C2, Zattoni F2.
Urology.Urology.2014 Mar;83(3):641-7. doi: 10.1016/j.urology.2013.12.010.
INTRODUCTION: To determine whether a novel intraoperative technique of COmplete Reconstruction of the Posterior Urethral Support (CORPUS) improves early urinary continence after robotic-assisted radical prostatectomy (RARP). In this prospective study, between November 2012 and June 2013, 36 consecut
PMID 24581526

Bilateral puborectalis interposition repair of rectourethral fistula.

Solomon MJ1, Tan KK, Bromilow RG, Wong JC.
Diseases of the colon and rectum.Dis Colon Rectum.2014 Jan;57(1):133-9. doi: 10.1097/01.dcr.0000437789.54759.c9.
BACKGROUND: Rectourethral fistula is a rare but significant complication that often requires operative intervention.OBJECTIVE: A new perineal approach using the medial aspect of the puborectalis muscles as a double-breasted rotational interposition flap to repair the rectourethral fistula is hereby
PMID 24316958

「恥骨直腸筋」

Puborectalis muscle
	The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx. (Puborectalis not labeled, but levator ani labeled at bottom right, and external anal sphincter labeled at bottom center.)
	Left Levator ani from within. (Puborectalis not labeled, but 'levator ani' labeled at center, and anal canal labeled at bottom center.)
Details
Latin	musculus puborectalis
Origin	lower part of the pubic symphysis, superior fascia of the urogenital diaphragm
Nerve	S3, S4. levator ani nerve
Actions	inhibit defecation
Identifiers
Gray's	p.424
Dorlands; /Elsevier	m_22/12550328
TA	A04.5.04.007
FMA	19091
	Anatomical terms of muscle