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The gastric folds (or gastric rugae) are coiled sections of tissue that exist in the mucosal and submucosal layers of the stomach. [1] They provide elasticity by allowing the stomach to expand when a bolus enters it. These folds stretch outward through the action of mechanoreceptors, which respond to the increase in pressure. [2]
In anatomy, rugae (sg.: ruga) are a series of ridges produced by folding of the wall of an organ. [1] In general, rugae are a biological feature found in many organisms, serving purposes such as increasing surface area, flexibility, or structural support. Most commonly rugae refers to the gastric rugae of the internal surface of the stomach.
During the contracted state of the stomach it is thrown into numerous folds or rugae, which, for the most part, have a longitudinal direction. They are most marked toward the pyloric end of the stomach, and along the greater curvature , and are entirely obliterated when the organ becomes distended .
Biopsy of the stomach in Ménétrier disease; the substantial pit hyperplasia makes the large rugal folds appear to be covered by myriad polyps resembling hyperplastic polyps. The muscularis propria is the folded structure at the bottom center. Specialty: Gastroenterology
The stomach bed refers to the structures upon which the stomach rests in mammals. [ 10 ] [ 11 ] These include the tail of the pancreas , splenic artery , left kidney , left suprarenal gland , transverse colon and its mesocolon , and the left crus of diaphragm , and the left colic flexure .
Gastric pits are indentations in the stomach which denote entrances to 3-5 tubular gastric glands. [1] [2] They are deeper in the pylorus than they are in the other parts of the stomach. The human stomach has several million of these pits which dot the surface of the lining epithelium.
Many Americans are facing the stomach bug on cruise ships this summer. Cases of norovirus on cruises are at their highest in 11 years, according to CDC data. Many Americans are facing the stomach ...
Vaginal rugae are structures of the vagina that are transverse ridges formed out of the supporting tissues and vaginal epithelium in females. [1] Some conditions can cause the disappearance of vaginal rugae and are usually associated with childbirth and prolapse of pelvic structures.