Ischioanal fossa 4787180 172638237 2007-11-20T04:24:19Z Arcadian 104523 moved [[Ischiorectal fossa]] to [[Ischioanal fossa]] over redirect: more modern name {{Infobox Anatomy | Name = {{PAGENAME}} | Latin = fossa ischioanalis | GraySubject = 120 | GrayPage = 425 | Image = Gray405.png | Caption = The [[perineum]]. The integument and superficial layer of [[superficial fascia]] reflected. (Ischiorectal fossa labeled at bottom left.) | Image2 = Gray1077.png | Caption2 = The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx. (Ischiorectal fossa labeled at bottom right.) | System = | MeshName = | MeshNumber = | DorlandsPre = f_14 | DorlandsSuf = 12376209 | }} The '''ischiorectal fossa''' (or '''ischioanal fossa''') is somewhat prismatic in shape, with its base directed to the surface of the [[perineum]], and its apex at the line of meeting of the [[obturator]] and [[anal fascia]]e. ==Boundaries== It has the following boundaries:<ref>{{NormanAnatomyFig|analtrianglesection}} - Ischiorectal fossa is colored yellow</ref> {| class="wikitable" | || ANTERIOR<BR>* [[fascia of Colles]] covering the [[Transversus perinei superficialis]]<BR>* [[inferior fascia of the urogenital diaphragm]] || |- | LATERAL<BR>* [[tuberosity of the ischium]]<BR>* [[Obturator internus muscle]] <BR>* [[obturator fascia]] || SUPERIOR:<BR>* [[Levator ani]]<BR><BR>INFERIOR:<BR>* [[skin]] || MEDIAL:<BR>* [[Levator ani]]<BR>* [[Sphincter ani externus]]<BR>* [[anal fascia]] |- | || POSTERIOR<BR>* [[Gluteus maximus]]<BR>* [[sacrotuberous ligament]] || |} ==Contents== The contents include: * Inside [[Alcock's canal]], on the lateral wall ** [[internal pudendal artery]] ** [[internal pudendal vein]] ** [[pudendal nerve]] * Outside Alcock's canal, crossing the space transversely ** [[inferior rectal artery]] ** [[inferior rectal veins]] ** [[inferior anal nerves]] ** fatty tissue across which numerous fibrous bands extend from side to side ==References== <references/> ==See also== * [[Anal triangle]] ==Additional images== <gallery> Image:Gray407.png|Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front. Image:Gray542.png|The superficial branches of the internal pudendal artery. </gallery> ==External links== * {{SUNYCrossSection|apmalefrontal4-8}} * {{SUNYAnatomyLabs|41|04|01|03}} - "The Female Perineum: The Ischioanal Fossa" * {{SUNYAnatomyImage|9|2|46}} * {{ViennaCrossSection|pelvis/pelvis-e12-15}} * {{NormanAnatomy|perineum}} ({{NormanAnatomyFig|analtriangle2}}, {{NormanAnatomyFig|femaleugtrianglesectionfascia}}) * [http://www.emory.edu/ANATOMY/AnatomyManual/92.jpg Diagram] at [[Emory University]] {{anatomy-stub}} {{Gray's}} {{Torso general}} [[pt:Fossa isquioanal]]