Human Anatomy PDF

- fig. 58: nerve to intestines, thickest at the attachment to the abdominal wall - fig. 13: circular folds (plicae circulares) are about 1 cm high, located from duodenum to ileocecal junction, become increasingly shorter in anal direction, shortest at the end of the ileum, consist of tunica mucos...

- fig. 58: nerve to intestines, thickest at the attachment to the abdominal wall - fig. 13: circular folds (plicae circulares) are about 1 cm high, located from duodenum to ileocecal junction, become increasingly shorter in anal direction, shortest at the end of the ileum, consist of tunica mucosa and tela submucosa - fig. 9 a and b: villi intestinales are found throughout the small intestine, they only consist of lamina epithelialis, goblet cells and lamina propria. they dont have lamina muscularis mucosae in villi, are 1 mm high, intestinal crypts (lieberkuhns crypts) open between the villi, are 0.5 mm deep. - fig. 9 b: small intestine has lymphatic tissue in the form of solitærfollikler and peyerske plaques. solitærfollikler are located individually and are numerous in the whole small intestine. Peyerske plaques are formed by groups of solitærfollikler. they are only located in ileum and are largest in the lower part. - fig. 56: ileum opens to the caecum. the opening is limited by two lips forming a valve, valva ilealis, the lips contain a circular muscle that is responsible for closing the opening between ileum and caecum. When the lips are pressed together, the valve closes in order to prevent backflow from the caecum - Tunica mucosa consists of lamina epithelialis, lamina propria and lamina muscularis mucosae. Lamina epithelialis is a monolayer of prismatic epithelium, goblet cells are between the prismatic cells. The prismatic cells absorb and have brush border, the goblet cells produce mucus.