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Videos - GI

Here's a lecture on the physiology of vomiting and the drug classes used to treat nausea and vomiting.
Vomiting, YAY!

Vomiting and Antiemetic drugs

Here's my lecture on diarrhea and constipation.  YAY POOP!

Dr Boyev GI Drugs for Diarrhea & Constipation

This is alink to the McGraw Hill website with a quick video reviewing the digestive tract:  

 I see someone called MrJWSMunro has pilfered the video and put it on YouTube (below).

McGraw Hill Digestive Animation

Here's another video that gives an overview of the Digestive Tract, same material, different animations:  Digestive System

This colonoscopic photograph demonstrates "melanosis coli", a discoloration of the bowel caused by laxatives like senna which contain anthraquinone.   Pretty!

N Engl J Med 2003;349:1349