BrainRegionTARGET TEA RECTUM

Rectum

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This page covers biological details of component Rectum. Region is part of aHuman target integrated biological model.

• *Top-down path to region*: Target -> Human Effectors (aHumanEffectors) -> Rectum (TARGET.TEA.RECTUM) (see Mind Maps)
• *Type*: effector
• *Brain area*: Effector Area
• *Role*: unknown
• *Function*: Removal of undigested materials from the digestive tract through defecation

(generated)

Components

(generated)

• Component items*:
• *Rectum sensory data* (*rectum-sensory-data*)

* Rectum - large intestine visceral receptors (large-intestine-visceral-receptors -> LPC.PN.SG.LDRG): sensations of fullness and urgency, pain

• *Rectum autonomic* (*rectum-autonomic*)

* [- sphincter ani internus muscle, parasympathetic] (BrainRegionLAC_PN_PSYM_PPG LAC.PN.PSYM.PPG -> HumanMusclesTorso sphincter-ani-internus-muscle-parasympathetic): keep the anal canal and anus closed, aids in the expulsion of the feces, inhibit contraction
* [- sphincter ani internus muscle, sympathetic] (BrainRegionLAC_PN_SYM_IMG LAC.PN.SYM.IMG -> HumanMusclesTorso sphincter-ani-internus-muscle-sympathetic): stimulate and maintain internal anal sphincter contraction

• *Rectum conscious flexors* (*rectum-conscious-flexors*)

* [- superficial transverse perineal muscle] (BrainRegionLPC_SC_VH_ONF LPC.SC.VH.ONF -> HumanMusclesTorso superficial-transverse-perineal-muscle): fixation of central tendon of perineum, support of pelvic floor
* [- corrugator cutis ani muscle] (BrainRegionLPC_SC_VH_ONF LPC.SC.VH.ONF -> HumanMusclesTorso corrugator-cutis-ani-muscle): raises the skin into ridges around the margin of the anus
* [- sphincter ani externus muscle] (BrainRegionLPC_SC_VH_ONF LPC.SC.VH.ONF -> HumanMusclesTorso sphincter-ani-externus-muscle): keep the anal canal and anus closed, aids in the expulsion of the feces

• *Rectum conscious extensors* (*rectum-conscious-extensors*)

* [- puborectalis muscle] (BrainRegionLPC_SC_VH_VM LPC.SC.VH.VM -> HumanMusclesTorso puborectalis-muscle): inhibit defecation
* [- coccygeus muscle] (BrainRegionLPC_SC_VH_VM LPC.SC.VH.VM -> HumanMusclesTorso coccygeus-muscle): pulls coccyx forward after defecation, closing in the back part of the outlet of the pelvis
* [- iliococcygeus muscle] (BrainRegionLPC_SC_VH_VM LPC.SC.VH.VM -> HumanMusclesTorso iliococcygeus-muscle): supports the viscera in pelvic cavity

Connectivity

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• Inbound Region Connections:*

|| *Source Area* || *Source Region* || *Source Name* || *Type* || *Reference* || || LAC || BrainRegionLAC_PN_PSYM_PPG LAC.PN.PSYM.PPG || Pelvic Peripheral Ganglion || sphincter-ani-internus-muscle-parasympathetic || (unknown reference) || || || LAC.PN.SYM.IMG || Inferior Mesenteric Ganglion || sphincter-ani-internus-muscle-sympathetic || (unknown reference) || || LPC || BrainRegionLPC_SC_VH_ONF LPC.SC.VH.ONF || Onuf's Nucleus || corrugator-cutis-ani-muscle || (unknown reference) || || || LPC.SC.VH.VM || Ventromedial Nucleus || coccygeus-muscle || (unknown reference) ||

• Outbound Region Connections:*

|| *Target Area* || *Target Region* || *Target Name* || *Type* || *Reference* || || LPC || BrainRegionLPC_PN_SG_LDRG LPC.PN.SG.LDRG || Lower Dorsal Root Ganglion || large-intestine-visceral-receptors || (unknown reference) ||

Thirdparty Circuits

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• no circuits defined

References

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• no references defined