Starch digestion by amylase is completed in

Options

A. Ileum
B. Duodenum
C. Stomach
D. Mouth

Answer

**Step-by-Step Solution:**

1. **Understanding Starch Digestion**: Starch digestion begins in the mouth with the enzyme salivary amylase, which breaks down starch into simpler sugars.

2. **Role of Amylase**: Salivary amylase (also known as ptyalin) is responsible for initiating the digestion of starch. However, the majority of starch digestion occurs in the small intestine.

3. **Location of Starch Digestion**: The small intestine is divided into three parts: the duodenum, jejunum, and ileum. Starch digestion is primarily completed in the duodenum, which is the first part of the small intestine.

4. **Pancreatic Amylase**: In the duodenum, pancreatic amylase continues the process of starch digestion, breaking down the remaining starch into maltose and other disaccharides.

5. **Absorption of Digested Products**: The digested products, such as glucose and maltose, are then absorbed in the small intestine, particularly in the upper part (duodenum).

6. **Conclusion**: Given the options provided (ileum, duodenum, stomach, mouth), the correct answer is **duodenum** as this is where starch digestion by amylase is completed.

**Final Answer**: Starch digestion by amylase is completed in the **duodenum**.

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