What is the function of the ridges in the lining of the stomach?

What is the function of the ridges in the lining of the stomach?

The lining of the stomach walls has ridges called rugae, which allow the stomach to expand and also help channel liquid internally. A layer of mucus protects the stomach from the hydrochloric acid in the digestive juices.

What do the rugae do?

The rugae are folds in the stomach lining. It protects the epithelium from the corrosive effects of the acid and from the physical abrasion of stomach contents, and it lubricates stomach contents.

What is the function of the three layers of muscle in the stomach?

Layers of Stomach Wall The three layers of smooth muscle consist of the outer longitudinal, the middle circular, and the inner oblique muscles. Construction of these muscles helps mix and break the contents into a suspension of nutrients called chyme and propels it into the duodenum.

What is the function of the fundus in the stomach?

The fundus stores gas produced during digestion. It typically doesn’t store any food; however, it can if the stomach is very full.

What are the folds of the mucosa of the stomach called?

In the empty state, the stomach is contracted and its mucosa and submucosa are thrown up into distinct folds called rugae; when distended with food, the rugae are “ironed out” and flat.

What are gastric folds?

The gastric folds (or gastric rugae) are coiled sections of tissue that exist in the mucosal and submucosal layers of the stomach. They provide elasticity by allowing the stomach to expand when a bolus enters it.

What is stomach rugae?

Gastric rugae are the redundant folds of gastric mucosa that are most prominent when the stomach is collapsed. The reservoir and mixing functions of the stomach demand a thick, expansile, muscular vessel, which characterizes gastric morphology.

What is fundus stomach?

Fundus: the upper part of the stomach next to the cardia. Body (corpus): the main part of the stomach, between the upper and lower parts.

What causes a hard lower abdomen?

Physical exercise: One of the reasons for hardness in lower abdomen is due to abdominal muscles. People who perform various workout sessions for reducing belly fat usually develop hard lower abdominal muscles. Sports activity such as swimming, skiing and snowboarding can also cause hardening of abdominal muscles.

Why does my upper abdomen hurt?

Other intestinal ailments that might cause upper abdominal pain include irritable bowel syndrome (IBS), diverticulitis , Crohn disease, colon obstruction, early appendicitis, and impaired blood flow to the bowel, a condition called mesenteric ischemia. These disorders can cause pain in different areas of abdomen.

What causes enlarged abdomen in men?

Ulcers and chronic irritation can also sometimes lead to an enlarged stomach. Sometimes, a thickening of the stomach wall in response to irritation causes the organ to get bigger, and people may also experience delayed emptying of the stomach because of inflammation.