Crypts of Lieberkuhn are found in between the villi. They secrete :-

Options

A. Glucagon
B. Succus entericus
C. Insulin
D. Secretin

Answer

**Step-by-Step Solution:**

1. **Identify the Structure**: The Crypts of Lieberkuhn are located in the small intestine, specifically between the villi. They are also referred to as intestinal glands.

2. **Function of Crypts of Lieberkuhn**: These crypts are responsible for secreting intestinal juices, which contain various enzymes that aid in digestion.

3. **Options Given**: The question provides four options: Glucagon, Succus entericus, Insulin, and Secretin.

4. **Analyze Each Option**:
- **Glucagon**: This is a hormone produced by the pancreas that helps to increase blood glucose levels. It is not secreted by the Crypts of Lieberkuhn.
- **Succus entericus**: This is the correct answer. It refers to the intestinal juice secreted by the Crypts of Lieberkuhn, which contains digestive enzymes.
- **Insulin**: This is another hormone produced by the pancreas that lowers blood glucose levels. It is not secreted by the Crypts of Lieberkuhn.
- **Secretin**: This is a hormone that regulates the secretion of pancreatic juices and bile but is not secreted by the Crypts of Lieberkuhn.

5. **Conclusion**: Based on the analysis, the Crypts of Lieberkuhn secrete **Succus entericus**.

**Final Answer**: Succus entericus.

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