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What is the first section of the small intestine called?

  1. Duodenum

  2. Ileum

  3. Jejunum

  4. Rectum

The correct answer is: Duodenum

The first section of the small intestine is known as the duodenum. It plays a crucial role in the digestive process as it is where most of the chemical digestion begins. The duodenum receives partially digested food from the stomach, along with bile from the liver and pancreatic juices. These secretions help to neutralize stomach acid and break down nutrients in the food, preparing them for further absorption in the following sections of the small intestine, namely the jejunum and ileum. Understanding the function of the duodenum is essential for comprehending the overall digestive process in poultry and other species.