Poultry Judging Practice Test

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

1. Jejunum, ileum, duodenum

2. Duodenum, jejunum, ileum

3. Ileum, duodenum, jejunum

4. Duodenum, ileum, jejunum

The correct answer is: Duodenum, jejunum, ileum

The small intestine consists of three distinct sections that play vital roles in digestion and nutrient absorption. The correct order of these sections is the duodenum, jejunum, and ileum. The duodenum is the first part, where most chemical digestion occurs. It receives chyme from the stomach along with digestive juices from the pancreas and liver, which facilitate the breakdown of food. Following the duodenum, the jejunum is the middle segment, which is primarily involved in the absorption of nutrients and minerals from digested food. Finally, the ileum is the last section, which continues the absorption process and is particularly important for the absorption of vitamin B12 and bile salts. Understanding the sequential arrangement of these sections helps to clarify their specific functions and the overall process of digestion.