The crypts of Lieberkühn in this organ contain Paneth cells, which fight infection.
The crypts of Lieberkühn in this organ contain Paneth cells, which fight infection. The presence of lymph nodes known as Peyer's patches distinguishes one section of it. The sphincter of Oddi controls the flow of secretions like bile and amylase from the liver and pancreas to this organ in a manner mediated by (*) cholecystokinin. Like the esophagus, it undergoes smooth- muscle contractions called peristalsis. The name "brush border" refers to the surface of its epithelium, which is covered in microvilli to increase nutrient absorption. For 10 points, name this organ that contains the ileum and duodenum and through which food passes after exiting the stomach.
The crypts of Lieberkühn in this organ contain Paneth cells, which fight infection.
{small intestine} [prompt on {intestine}]