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...ˈtɛstɪnəl vɪˈlaɪ/) are small, finger-like projections that extend into the lumen of the [[small intestine]]. They are part of the [[intestinal mucosa]] and ...tively, providing exceptionally efficient absorption of nutrients in the [[lumen]] of the small intestine.

...unced: plicae cir-cu-lar-es), are large valvular flaps protruding into the lumen of the small intestine. They are a part of the [[gastrointestinal tract]] a === Anatomy ===

...nown as '''circular folds''', are large valvular flaps protruding into the lumen of the [[small intestine]]. The term "plicae circulares" is derived from La === Anatomy ===

...in shape and have a larger lumen, or inner space. The cells that line the lumen are columnar or cuboidal and have a large nucleus. [[Category:Anatomy]]

...ontain specialized cells called [[M cells]] that take up antigens from the lumen of the gut and deliver them to the underlying lymphoid tissue. Here, the an ...Specialized cells in Peyer's patches that transport antigens from the gut lumen to immune cells.

...by the presence of multiple echogenic, non-shadowing structures within the lumen of the appendix, giving an appearance similar to a basket. * [[Appendix (anatomy)|Appendix]]: A small, tube-like organ attached to the first part of the lar

...l wall, and therefore does not cause significant narrowing of the arterial lumen. * [[Media (anatomy)]]

A '''Sinusoid''' (pronounced: /ˈsaɪnəˌsɔɪd/) is a term used in [[Anatomy]] and [[Physiology]] to describe a small, blood vessel found in certain org ...ic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall.

'''Intimal''' (pronunciation: in-ti-mal) is a term used in the field of [[Anatomy]] and [[Pathology]] to describe the innermost layer of a blood vessel. It i ...ic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall.

...ic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. The cells are called [[endothelial cells]] [[Category:Anatomy]]

...ic vessels, forming an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. It is a type of epithelium. * [[Anatomy]]

...immune system]], specifically in the immune surveillance of the intestinal lumen and in the facilitation of the generation of the immune response within the [[Category:Anatomy]]

* [[Villi]]: Small, finger-like projections that extend into the lumen of the small intestine and increase its surface area for nutrient absorptio [[Category:Anatomy]]

...Carotid Stenosis]]''' is a narrowing or constriction of the inner surface (lumen) of the carotid artery, usually caused by atherosclerosis. This condition c [[Category:Anatomy]]

.... They are typically long, slender cells that have thick walls and a small lumen (the inside space of a cell). [[Category:Plant anatomy]]

* [[Anatomy]] - The branch of biology concerned with the study of the structure of orga * [[Appendix (anatomy)]] - A tube-shaped sac attached to and opening into the lower end of the la