Stomach the first three chambers of which are all lined with oesophageal mucosa. In birds and crocodilians, the stomach is divided into two regions. Anteriorly is a narrow tubular region, the proventriculus, lined by fundic glands, and connecting the true stomach to the crop. Beyond lies the powerful muscular gizzard, lined by pyloric glands, and, in some species, containing stones that the animal swallows to help grind up food. In insects there is also a crop. The insect stomach is called the midgut. Information about the stomach in echinoderms or molluscs can be found under the respective articles. Stomach The stomach
Stomach rumble of but not actually within the stomach). The lack of bowel sounds is indicative of ileus, intestinal obstruction, or some other serious pathology. The scientific name borborygmus is related to the 16th-century French word "borborygme", itself from Latin, ultimately from Ancient Greek βορβορυγμός ("borborygmós"). The Greeks probably onomatopoetically coined the word. Other causes of stomach rumbles: The word borborygmic has been used in literature to describe noisy plumbing. In "", Vladimir Nabokov wrote: "All the toilets and waterpipes in the house had been suddenly seized with borborygmic convulsions". In "A Long Way Down" (New York: Harper, 1959, p. 54), Elizabeth