Plicae circulares
Plicae circulares
Plicae circulares (pronunciation: /pliːkeɪ sɪrˈkjuːləriːz/), also known as circular folds, are large valvular flaps protruding into the lumen of the small intestine. The term "plicae circulares" is derived from Latin, where "plicae" means folds and "circulares" refers to their circular arrangement.
Anatomy
The plicae circulares are a series of circular folds that are found in the small intestine. They are most numerous in the jejunum, less so in the ileum, and absent in the duodenum. These folds are composed of mucosa and submucosa. They are considered a permanent feature as they do not disappear when the intestine is distended.
Function
The primary function of the plicae circulares is to slow the passage of the partially digested food along the intestines and to increase the surface area for absorption. They also help in mixing the food with the digestive juices.
Clinical significance
In certain pathological conditions, such as Crohn's disease, the plicae circulares may become thickened and rigid, leading to complications like intestinal obstruction.
Related terms
External links
- Medical encyclopedia article on Plicae circulares
- Wikipedia's article - Plicae circulares
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