
Overview
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

Mucosa
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

- Villi
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

- Intestinal glands
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

Submucosa
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

- Plica circularis >
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

Muscularis externa
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x

Serosa
A section of the small intestine displays the four layers of this organ, as well as structures that increase surface area, villi and plicae circulares. Villi have a core of lamina propria covered by intestinal epithelium, including microvilli on the absorptive cells. Each plica has a core of submucosa that is overlain by all mucosal layers, including villi. 100x