We once posted a short version of the story of Alexis St. Martin, who suffered a gunshot wound in his stomach that never healed, and thus became the subject of experiments in which his doctor observed the process of huma...

The post about the cow's digestive tract in sculpt...  ...earch on how foods digested. The hole is called a fistula . You can't just cut a hole in a living human to s...  ...ng the rumen, so some cows have surgery to make a fistula in the rumen, and a cannula is fitted over the ho...