The ileum, like the rest of the small intestine, has mucosal, submucosal, muscularis, and serosal layers. Furthermore, the muscularis is divided into an inner circular and outer longitudinal layer. The ileum has large villi with crypts at their base but the villi are not as prominent as in the jejunum. The most identifiable feature on slides of the ileum are numerous Peyer's patches (lymph nodules).
These pictures were taken by bio 139 students in the spring of 2018 and fall of 2019. Scroll through the pictures and compare them with the labeled picture. Select one and draw it. This model shows what the layers should be also. It is sort of a combnation of all 3 layers sections.
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