Which of the following functions is not performed by stomach?

Options

A. Digestion of protein
B. Collection of food
C. Digestion of carbohydrates
D. Production of bile juices

Answer

To determine which function is not performed by the stomach, we need to analyze the functions of the stomach and compare them with the options provided.

### Step-by-Step Solution:

1. **Understand the Structure of the Stomach**:
- The stomach is a J-shaped organ in human beings.
- It is known as the largest expandable organ in the body.

2. **Identify the Functions of the Stomach**:
- The stomach contains gastric glands that secrete gastric juice.
- Gastric juice consists of:
- **Mucus**: Protects the stomach wall from acid.
- **Hydrochloric Acid (HCl)**: Activates the enzyme pepsin.
- **Pepsin**: An enzyme that digests proteins.

3. **Recognize Other Functions**:
- The stomach is involved in the physical breakdown of food through churning movements.
- It temporarily stores food before it moves to the small intestine.

4. **Identify Functions Not Performed by the Stomach**:
- Bile juice is produced by the liver, not the stomach.
- Bile is essential for the digestion of fats, but its production is not a function of the stomach.

5. **Conclusion**:
- Based on the analysis, the function that is not performed by the stomach is the **production of bile juice**.

### Final Answer:
The function that is not performed by the stomach is the **production of bile juice**.

---