Stomach disease utilizes a small flexible camera. The procedure does require intravenous sedation and takes about 30–45 minutes; the endoscope is inserted via the mouth and can visualize the entire swallowing tube, stomach and duodenum. The procedure also allows the physician to obtain biopsy samples. In many cases of bleeding, the surgeon can use the endoscope to treat the source of bleeding with laser, clips or other injectable drugs. Other radiological studies frequently used to assess patients with chronic stomach problems include a barium swallow, where a dye is consumed and pictures of the esophagus and stomach are obtained every few minutes.
Built for the Kill the name of the episode. Built For The Kill uses a graphical approach to catch the audiences attention, often showing inner workings of the predatory animals (e.g. showing a snake's "Jacobson Organ" inside its mouth) by using diagrams. Some effects seen are used to show the audience what they can't really see, but is there (such as the electricity coming from an Electric Ray or the sound waves used in Echo Location). This graphical approach to nature is meant to make the documentary more interesting to watch. "Built for the Kill"s classic opening was a montage of creatures featured in