Stomach "mouth". The words "gastro-" and "gastric" (meaning related to the stomach) are both derived from the Greek word "gaster" (, meaning "belly"). Although the precise shape and size of the stomach varies widely among different vertebrates, the relative positions of the oesophageal and duodenal openings remain relatively constant. As a result, the organ always curves somewhat to the left before curving back to meet the pyloric sphincter. However, lampreys, hagfishes, chimaeras, lungfishes, and some teleost fish have no stomach at all, with the oesophagus opening directly into the anus. These animals all consume diets that either require little storage of
The Stone Age (The Goodies) them. They discover they cannot get back out the dinosaur's mouth, so decide to travel through the creature till they reach its stomach. They are stuck there for a long time, until Graeme comes up with an idea — they will shout through the Tyrannosaurus Rex. So Bill shouts for help, but ends up waking the creature. When the creature's mouth opens, they all run out and climb back up the hole to their office. Graeme states he wishes he could have a better examination of the creature, when it smashes through the floor and tips the office over. The