,What are the folds in the lining of the stomach?,In the empty state

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 the folds in the lining of the stomach?

When the stomach is empty, and not distended, the lining is thrown up into folds called rugae. After eating, these folds flatten, and the stomach is able to distend greatly.

What is the lining of the stomach and the muscle it sits on?

gastric mucosa

Beneath the gastric mucosa is a thin layer of smooth muscle called the muscularis mucosae, and below this, in turn, is loose connective tissue, the submucosa, which attaches the gastric mucosa to the muscles in the walls of the stomach. The gastric mucosa contains six different types of cells.

What are the folds on the small intestine wall called?

The inner wall of the small intestine is covered by numerous folds of mucous membrane called plicae circulares. The surface of these folds contains tiny projections called villi and microvilli, which further increase the total area for absorption.

What do the folds in the small intestine do?

The lining of the small intestine consists of a series of permanent spiral or circular folds, termed the plicae circulares, which amplify the organ’s surface area, promoting efficient nutrient absorption.

What are the 5 sphincters of the digestive system?

Terms in this set (5)

  • lower esophageal or cardiac. sphincter between esophagus and stomach.
  • pyloric. Sphincter between stomach and duodenum.
  • ileocecal. Sphincter between small intestine and caecum.
  • anal. Sphincter at end of rectum.
  • upper esophageal. Sphincter between mouth and esophagus.

What are the folds in the large intestine called?

Circular folds

Also called a plica circulare, a circular fold is a deep ridge in the mucosa and submucosa. Beginning near the proximal part of the duodenum and ending near the middle of the ileum, these folds facilitate absorption.

What is the function of folds and villi Brainly?

The Lining of the small intestine contains spherical folds, which slow the movement of the partly digested food through the intestines, and get an increased surface for absorption. Folds are covered with small finger-like projections called villi, which extends the surface area of the intestine.