circular folds


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.

circular folds

Transverse ruffles that ring the inner wall of the small intestine. The circular folds (plicae) are soft ridges of mucosa that protrude into the intestinal lumen. These folds are largest and closest together in the duodenum distal to the major duodenal papilla, they decrease in height and number through the distal jejunum, and they disappear in the distal ileum. See: circular plica
See also: fold
References in periodicals archive ?
It follows the surface profiles of the circular folds and sends fine fascicles of smooth muscle cells into the core of the villi.

Full browser ?