Crypts of Lieberkuhn are present in

Options

A. pancreas and secrete pancreatic juice
B. small intestine and secrete digestive enzymes
C. stomach and secrete dilute HCl
D. stomach and secrete trypsin.

Explanation

To answer the question "Crypts of Lieberkuhn are present in," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Crypts of Lieberkuhn**:
- Crypts of Lieberkuhn are specialized glands located in the intestinal mucosa. They are also known as intestinal glands.

2. **Identifying the Location**:
- These crypts are primarily found in the small intestine, specifically in the lining of the intestinal walls.

3. **Function of Crypts of Lieberkuhn**:
- The main function of these glands is to secrete digestive enzymes and other substances that aid in the digestion and absorption of nutrients. For example, they secrete enzymes like sucrase, maltase, and lactase.

4. **Evaluating the Options**:
- Now, let's evaluate the options provided:
- **Option 1**: Pancreas and secret pancreatic juice - This is incorrect because the pancreas contains acini that secrete pancreatic juice, not crypts of Lieberkuhn.
- **Option 2**: Small intestine and secret digestive enzymes - This is correct as crypts of Lieberkuhn are indeed located in the small intestine and secrete digestive enzymes.
- **Option 3**: Stomach and secret dilute HCl - This is incorrect because the stomach contains parietal cells that secrete hydrochloric acid, not crypts of Lieberkuhn.
- **Option 4**: Stomach and secret trypsin - This is incorrect because trypsin is a pancreatic enzyme and is not secreted by the stomach.

5. **Conclusion**:
- Based on the evaluation, the correct answer is **Option 2: small intestine and secret digestive enzymes**.

### Final Answer:
Crypts of Lieberkuhn are present in the small intestine and secrete digestive enzymes.

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