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Princess Maranda posted an update in the group
Microscopic Photos of Digestive System Tissue Slides 3 years, 7 months ago The tissue below is the ileum – the final and longest segment of the small intestine. It is specifically responsible for the absorption of vitamin B12 and the reabsorption of conjugated bile salts. The ileum is about 3.5 metres (11.5 feet) long (or about three-fifths the length of the small intestine) and extends from the jejunum (the middle section of the small intestine) to the ileocecal valve, which empties into the colon (large intestine). The ileum is suspended from the abdominal wall by the mesentery, a fold of serous (moisture-secreting) membrane.The smooth muscle of the ileum’s walls is thinner than the walls of other parts of the intestines, and its peristaltic contractions are slower. The ileum’s lining is also less permeable than that of the upper small intestine.
Reference:
Britannica, The Editors of Encyclopaedia. “ileum”. Encyclopedia Britannica, 1 Apr. 2015, https://www.britannica.com/science/ileum. Accessed 18 May 2022.
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