Which of the following statements is false?

Options

A. Mucosal epithelium has goblet cells which secrete mucus for lubrication
B. Mucosa forms gastric glands in the stomach and crypts in between the bases of villi in intestine
C. Cells lining the villi has brush border or microvilli
D. All the four basic layer in the wall of gut never show modification in different parts of the alimentary canal

Answer

To determine which of the statements is false, we will analyze each statement provided in the question.

### Step-by-Step Solution:

1. **Understanding the Mucosa and Gastric Glands**:
- The mucosa is the innermost layer of the gastrointestinal tract and is responsible for the secretion of digestive enzymes and gastric juices.
- Gastric glands are indeed formed by the mucosa in the stomach, which is a true statement.

2. **Villi and Microvilli**:
- The cells lining the villi in the small intestine have microvilli, which increase the surface area for absorption. This statement is also true.

3. **Modification of the Gut Layers**:
- The statement claims that all four basic layers in the wall of the gut never show modification in different parts of the alimentary canal. This is false.
- In reality, the mucosal layer shows significant modifications depending on the region of the alimentary canal. For example, the stomach has rugae (folds), and the intestine has villi and crypts, which are modifications of the mucosal layer.

4. **Conclusion**:
- Based on the analysis, the false statement is the one that claims that the four basic layers of the gut never show modification in different parts of the alimentary canal. Therefore, option 4 is the correct answer to the question.

### Final Answer:
The false statement is: "All the four basic layers in the wall of the gut never show modification in different parts of the alimentary canal."

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