Secretion of gastric juice is stopped by

Options

A. gastrin
B. pancreozymin
C. Cholecystokinn
D. enterogasterone

Explanation

To solve the question "Secretion of gastric juice is stopped by," we need to analyze the options provided and identify which substance is responsible for inhibiting gastric juice secretion.

### Step-by-Step Solution:

1. **Understanding Gastric Juice**: Gastric juice is a digestive fluid produced by the stomach that contains hydrochloric acid, pepsinogen, and intrinsic factor. Its secretion is crucial for digestion, but it also needs to be regulated.

2. **Identifying the Options**:
- **A. Gastrin**: This hormone stimulates the secretion of gastric juice. Therefore, it does not stop gastric juice secretion.
- **B. Pancreozyme**: This is related to pancreatic enzymes, which aid in digestion but do not directly inhibit gastric juice secretion.
- **C. Cholecystokinin**: This hormone primarily stimulates the gallbladder to release bile and the pancreas to release digestive enzymes but does not directly inhibit gastric juice secretion.
- **D. Enterogastron**: This is a hormone secreted by the small intestine that inhibits gastric secretion and motility.

3. **Analyzing the Inhibitory Mechanism**: The body has regulatory mechanisms to prevent excessive gastric juice secretion. Enterogastron plays a crucial role in this regulation by signaling the stomach to reduce gastric juice production when food has moved into the small intestine.

4. **Conclusion**: Based on the analysis of each option, the correct answer is **D. Enterogastron**, as it is the substance that stops the secretion of gastric juice.

### Final Answer:
The secretion of gastric juice is stopped by **D. Enterogastron**.