!Large Intestine overview
!!Anatomy
The large intestine belongs to the((Digestive - System Overview| digestive tract)). It consists of the ((Digestive - Cecum and Appendix Mucosa|cecum, appendix)), ((Digestive - Colon Mucosa|colon)), ((Digestive - Rectum - Mucosa (Endodermal layer)|rectum)), and ((Digestive - Anal Mucosa (squamous epithelium)|anal canal)). It starts in the right iliac region of the pelvis, just at or below the right waist, where it is joined to the bottom end of the ((Digestive - Small Intestine Overview|small intestine)). The __ileocaecal valve __prevents the travelling of the colon content and it´s bacteria back into the ileum. From here the colon continues up the abdomen, then across the width of the abdominal cavity, and then it turns down, continuing to its endpoint at the anus.

{img fileId="243" thumb="box"}graphic: wikipedia/Mariana Ruiz Villarreal

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{img fileId="204" thumb="box"}graphic source: wikipedia

!!Brain
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!!!Relay:
*__Brain Stem__ ( + / - ) lateral left, for mucosa in ((Digestive - Cecum and Appendix Mucosa|caecum)), ((Digestive - Colon Mucosa|colon)), ((Digestive - Sigmoid Colon|sigma)) and ((Digestive - Rectum - Mucosa (Endodermal layer)|rectum)) and
*__Midbrain__ (+/-) lateral left, for ((Digestive - Intestine Smooth Muscle|smooth muscle)) and ((Digestive - Anal Sphincter Muscles |Anal Internal Sphincter))
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*__Cerebellum__ (+/-) for ((Digestive - Visceral Fascia - Peritoneum|Peritoneum))/((Digestive - Visceral Fascia - Greater Omentum (Epiploon)|greater omentum))
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*__Cerebral Medulla__ (-/+) "lumbar & pelvic" region for ((Digestive - Intestinal Lymphatic Tissue|lymphatic tissue)) and striated muscle/((Digestive - Anal Sphincter Muscles |external sphincter))
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*__Cerebral Cortex__ (-/+) medio-lateral insular region left hemisphere "8 o'clock"-relay, for ((Digestive - Anal Mucosa (squamous epithelium)|anal epithelium))
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and motoric & post-sensory cortex for anal sensitivity and innervation of the ((Digestive - Anal Sphincter Muscles |external sphincter))
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