
Appendix
The appendix, a portion of the large intestine, also lacks villi and has very straight intestinal glands. Unlike the remainder of the large intestine, however, the appendix has a complete outer longitudinal muscle layer, thus lacking taeniae coli. The appendix is covered by a serosa. Abundant lymphoid tissue infiltrates the lamina propria. 100x

Mucosa
The appendix, a portion of the large intestine, also lacks villi and has very straight intestinal glands. Unlike the remainder of the large intestine, however, the appendix has a complete outer longitudinal muscle layer, thus lacking taeniae coli. The appendix is covered by a serosa. Abundant lymphoid tissue infiltrates the lamina propria. 100x

Submucosa
The appendix, a portion of the large intestine, also lacks villi and has very straight intestinal glands. Unlike the remainder of the large intestine, however, the appendix has a complete outer longitudinal muscle layer, thus lacking taeniae coli. The appendix is covered by a serosa. Abundant lymphoid tissue infiltrates the lamina propria. 100x

Muscularis externa
The appendix, a portion of the large intestine, also lacks villi and has very straight intestinal glands. Unlike the remainder of the large intestine, however, the appendix has a complete outer longitudinal muscle layer, thus lacking taeniae coli. The appendix is covered by a serosa. Abundant lymphoid tissue infiltrates the lamina propria. 100x

Diffuse lymphoid tissue
The appendix, a portion of the large intestine, also lacks villi and has very straight intestinal glands. Unlike the remainder of the large intestine, however, the appendix has a complete outer longitudinal muscle layer, thus lacking taeniae coli. The appendix is covered by a serosa. Abundant lymphoid tissue infiltrates the lamina propria. 100x

Lymphoid nodules
The appendix, a portion of the large intestine, also lacks villi and has very straight intestinal glands. Unlike the remainder of the large intestine, however, the appendix has a complete outer longitudinal muscle layer, thus lacking taeniae coli. The appendix is covered by a serosa. Abundant lymphoid tissue infiltrates the lamina propria. 100x