Read the following statements and înd out the incorreet statement.

Options

A. No significant digestive activity occurs in large intestine.
B. The bile released into the duodenum contains bile pigments, bile salts but no enzymes.
C. The activities ofthe gastro-intestinal tract are under neural and hormonal control for proper coordination of different parts.
D. Gastric and intestinal secretions are stimulated by neural signals only.

Answer

To solve the question, we need to analyze each of the provided statements regarding digestion and absorption. We will identify which statement is incorrect.

### Step-by-Step Solution:

1. **Statement Analysis**:
- **Statement 1**: "No significant digestive activity occurs in the large intestine."
- **Analysis**: This statement is correct. The large intestine primarily absorbs water and some remaining nutrients, but it does not play a significant role in digestion.

2. **Statement 2**: "The bile released in the duodenum contains bile pigments, bile salts, but no enzymes."
- **Analysis**: This statement is also correct. Bile does contain bile salts and pigments, but it does not contain digestive enzymes.

3. **Statement 3**: "The activities of the gastrointestinal tract are under neural and hormonal coordination."
- **Analysis**: This statement is correct. The gastrointestinal tract is regulated by both neural signals (from the brain and nervous system) and hormonal signals (like gastrin and cholecystokinin).

4. **Statement 4**: "Gastric and intestinal secretion are stimulated by neural signals only."
- **Analysis**: This statement is incorrect. Gastric and intestinal secretions are stimulated by both neural and hormonal signals, not just neural signals.

### Conclusion:
The incorrect statement is **Statement 4**: "Gastric and intestinal secretion are stimulated by neural signals only."

### Final Answer:
The correct answer for this question is **option number four**.

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