Churning movement is the characteristic of
(a) stomach
(b) small intestine
(c) mouth
(d) large intestine

Options

A. stomach
B. small intestine
C. mouth
D. large intestine

Answer

To solve the question regarding which part of the elementary canal exhibits churning movement, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Churning Movement**:
- Churning movement refers to the rhythmic contraction and relaxation of muscles that mix food with digestive juices. This process is crucial for breaking down food into smaller particles and facilitating digestion.

2. **Analyzing Each Option**:
- **Option A: Stomach**:
- The stomach has a muscular layer called the muscularis, which is responsible for the churning movement. This movement mixes food with gastric juices, aiding in digestion. Therefore, this option is likely correct.

- **Option B: Small Intestine**:
- The small intestine primarily functions in the absorption of nutrients rather than churning. While there are some movements (peristalsis) that help mix food, it does not exhibit churning in the same way as the stomach.

- **Option C: Mouth**:
- In the mouth, the primary action is mastication (chewing), not churning. Therefore, this option is incorrect.

- **Option D: Large Intestine**:
- The large intestine's main function is to absorb water and electrolytes and to form and store feces. It does not perform churning movements like the stomach.

3. **Conclusion**:
- Based on the analysis, the churning movement is characteristic of the stomach. Therefore, the correct answer is **(a) stomach**.

### Final Answer:
The churning movement is characteristic of the **stomach** (Option A).