The process of digestion of food in human being does not take place at

Options

A. Stomach
B. Food pipe
C. Mouth
D. Small intestine

Answer

To answer the question "The process of digestion of food in human beings does not take place at," we need to identify the part of the alimentary canal where digestion does not occur.

### Step-by-Step Solution:

1. **Understand the Alimentary Canal**: The human alimentary canal includes several parts: the mouth, esophagus, stomach, small intestine, and large intestine. Each of these parts has a specific role in digestion.

2. **Identify the Role of Each Part**:
- **Mouth**: Digestion begins here with the mechanical breakdown of food and the action of saliva, which contains the enzyme salivary amylase that starts carbohydrate digestion.
- **Esophagus**: This is a muscular tube that connects the mouth to the stomach. It primarily functions to transport food. There are no digestive enzymes present in the esophagus, and thus, no digestion occurs here.
- **Stomach**: The stomach contains gastric juices, including hydrochloric acid and enzymes like pepsin, which digest proteins.
- **Small Intestine**: This is the main site for digestion and absorption of nutrients. The duodenum, the first part of the small intestine, is where most digestion occurs with the help of enzymes from the pancreas and bile from the liver.
- **Large Intestine**: This part is primarily involved in the absorption of water and electrolytes, and it does not play a significant role in digestion.

3. **Conclusion**: Based on the functions of these parts, the esophagus is the only part of the alimentary canal where digestion does not take place. Therefore, the correct answer is the esophagus.

### Final Answer:
The process of digestion of food in human beings does not take place at the **esophagus**.

---