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Rectum::rectal    Rectal::colon    Rectum::latin    Feces::needed    Which::pelvis    Title::first

{{#invoke:redirect hatnote|redirect}} {{ safesubst:#invoke:Unsubst||$N=Merge from |date=__DATE__ |$B= {{#invoke:Message box|mbox}} }} {{#invoke:Protection banner|main}} {{#invoke:Infobox|infobox}}{{safesubst:#invoke:Check for unknown parameters|check|unknown= | Type | type | Name | neuron_name | name | MapPosIGNORE_PARAMETER | MapIGNORE_PARAMETER | TA98IGNORE_PARAMETER | ImageMap | Imagemap | image_map | MapWidth | map_caption | MapCaption | Image | image | image_neuron | Width | image_size | Alt | alt | Caption | caption | caption_neuron | Image2 | image2 | Width2 | image2_size | Alt2 | alt2 | Caption2 | caption2 | caption2_neuron | Latin | Greek | part_of | PartOf | is_part_of | IsPartOf | CarnegieStage | days | Days | system | System | components | Components | location | function | neurotransmitter | morphology | afferents | efferents | Origin | Origins | origin | origins | Insertion | Insertions | insertion | insertions | Articulation | Articulations | articulations | Supplies | DrainsFrom | Drainsfrom | BranchFrom | Branchfrom | Source | source | DrainsTo | Drainsto | BranchTo | Branchto | Blood | blood | artery | Artery | vein | Vein | nerve | Nerve | NerveRoot | lymph | Lymph | Action | action | PhysicalExam | Antagonist | precursor | Precursor | gives_rise_to | GivesRiseTo | From | To | Innervates | FiberType | acronym | Acronym | code | Code | BrainInfoType | BrainInfoNumber | NeuroLex | NeuroLexID | Dorlands | DorlandsID | DorlandsPre | DorlandsSuf | TH | TE | FMA | MeshName | Meshname | MeSHname | MeshYear | MeshNumber | BamsSlug | GraySubject | GrayPage}} The rectum (from the Latin rectum intestinum, meaning straight intestine) is the final straight portion of the large intestine in some mammals, and the gut in others. The human rectum is about {{safesubst:#invoke:convert|convert}} long,<ref>{{#invoke:citation/CS1|citation |CitationClass=citation }}</ref> and begins at the rectosigmoid junction (the end of the sigmoid colon), at the level of the third sacral vertebra or the sacral promontory depending upon what definition is used.<ref name=ASCRS>{{#invoke:citation/CS1|citation |CitationClass=book }}</ref> Its caliber is similar to that of the sigmoid colon at its commencement, but it is dilated near its termination, forming the rectal ampulla. It terminates at the level of the anorectal ring (the level of the puborectalis sling) or the dentate line, again depending upon which definition is used.<ref name=ASCRS /> In humans, the rectum is followed by the anal canal, before the gastrointestinal tract terminates at the anal verge.


Rectum sections
Intro  Structure  Function  Clinical significance  Society and culture  History  Additional images  See also  References  External links  

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