Poultry Judging Practice Test

What is the correct order of the three sections in the small intestine?

1. Ileum, Jejunum, Duodenum

2. Duodenum, Jejunum, Ileum

3. Jejunum, Duodenum, Ileum

4. Ileum, Duodenum, Jejunum

The correct answer is: Duodenum, Jejunum, Ileum

The correct order of the three sections in the small intestine is Duodenum, Jejunum, and Ileum. This sequence reflects the anatomical and functional organization of the small intestine. Starting with the Duodenum, it is the first section and directly connects to the stomach. This part is crucial for the initial stages of digestion, where chyme from the stomach is mixed with bile from the liver and digestive juices from the pancreas. This combination is essential for breaking down food. Following the Duodenum is the Jejunum, which is the middle section. It plays a significant role in the absorption of nutrients. The walls of the Jejunum are lined with villi and microvilli, which increase the surface area and enhance the absorption capacity. Finally, the Ileum is the last segment of the small intestine, responsible for the absorption of remaining nutrients and bile acids. It also connects to the large intestine at the cecum. Understanding this order helps in comprehending how food is processed and absorbed within the small intestine, which is vital for nutrition and overall health.