8. Locate the lesser omentum, the serous membrane that attaches the lesser curva

Question

8. Locate the lesser omentum, the serous membrane that attaches the lesser curvature of the stomach to the liver. Using scissors, make an incision from the dome-shaped fundus to the pyloric region. Note the greenish sub- stance, meconium, found in the stomach. Meconium is found in fetal digestive tracts and consists of bile- stained mucus, sloughed off epithelial cells of the diges- tive tract, and swallowed amniotic fluid residues. Note the rugae (folds) of the gastric lining. Finally, identify the thickened pyloric sphincter located at the junction between the stomach and the small intestine. 9. The small intestine has three regions: The first is the duodenum, the part of the small intestine that receives chyme (partially digested food mixed with gastric juices) from the stomach. The majority of the remaining length of the small intestine is the jejunum. The last re- gion of the small intestine is the ileum, where the small intestine joins with the large intestine. Identify the three regions of the small intestine and then lift the small in- testine to observe how it is attached to the dorsal body wall by the mesentery. What types of structures do you see in the mesentery?

Explanation / Answer

Mesentry is a set of tissues recognised as organ. It is formed by double fold of peritoneum that attaches the intestine to the wall of abdomen. The structures found in the mesentry are blood vessels, lymphatic vessels and nerves. These structures creates different routes to digestive system.

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