The other two sections, the jejunum and ileum, have vastly increased surface area due to the presence of villi.
B lymphocytes dominate in the germinal centers of the follicles of Peyer's patches, which are found in one portion of this region. Meissner's plexus dominates the enteric nervous system in this area, while Brunner glands are located above the sphincter of Oddi, which controls the rate of secretions into this organ's first and shortest portion. The other two sections, the jejunum and ileum, have vastly increased surface area due to the presence of villi. For 10 points, name this coiled digestive organ that contains the duodenum and is much longer than its "large" neighbor.
B lymphocytes dominate in the germinal centers of the follicles of Peyer's patches, which are found in one portion of this region.
{small intestine}