Enteroendocrine glands are present in

Options

A. Stomach
B. Intestine
C. Oesophagus
D. Both A and B.

Answer

**Step-by-Step Solution:**

1. **Understanding Enteroendocrine Glands**: Begin by defining what enteroendocrine glands are. These are specialized cells that are part of the endocrine system and are primarily located in the gastrointestinal tract.

2. **Location of Enteroendocrine Glands**: Identify where these glands are found. Enteroendocrine glands are located in various parts of the gastrointestinal tract, including the stomach and the intestine.

3. **Function of Enteroendocrine Glands**: Explain that these glands secrete hormones directly into the bloodstream, which play a crucial role in regulating digestive processes. For example, one of the hormones secreted is cholecystokinin, which aids in digestion.

4. **Analyzing the Options**: Given the options (stomach, intestine, esophagus, both A and B), evaluate which parts of the gastrointestinal tract contain enteroendocrine glands. The stomach and intestine are confirmed locations.

5. **Conclusion**: Since enteroendocrine glands are present in both the stomach and the intestine, the correct answer to the question is "both A and B".

**Final Answer**: Both A and B (stomach and intestine).

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