What are valves of Kerckring?
What are valves of Kerckring?
The valvulae conniventes, also known as Kerckring folds/valves, plicae circulares or just small bowel folds, are the mucosal folds of the small intestine, starting from the second part of the duodenum, they are large and thick at the jejunum and considerably decrease in size distally in the ileum to disappear entirely …
Where can you find plicae circulares?
The plicae circulares are most prominent in the distal duodenum and jejunum. Observe the layers of the wall of the jejunum . Note the absence of glands in the submucosa, which is a characteristic feature of the jejunum.
What is the purpose of the plicae circulares?
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 valves of Houston?
Anatomical terminology The transverse folds of rectum (or Houston’s valves or the valves of Houston) are semi-lunar transverse folds of the rectal wall that protrude into the rectum, not the anal canal as that lies below the rectum.
What is the difference between Rugae and plicae circulares?
Structurally, the mucosa is covered in wrinkles or folds called plicae circulares—these are permanent features in the wall of the organ. They are distinct from the rugae, which are non-permanent features that allow for distention and contraction.
What is the difference between Rugae and Plicae Circulares?
What does the ileum secrete?
Cells in the lining of the ileum secrete the protease and carbohydrase enzymes responsible for the final stages of protein and carbohydrate digestion into the lumen of the intestine. These enzymes are present in the cytoplasm of the epithelial cells.
What do intestinal glands secrete?
The intestinal glands secrete peptidase enzymes that break these chains into individual amino acids that the intestines can absorb.
