Enterogasterone is secreted by

Options

A. Gastric mucosa
B. Oesophageal mucosa
C. Saliva
D. Duodenal mucosa.

Answer

**Step-by-Step Solution:**

1. **Understanding Enterogastrone:**
- Enterogastrone is a hormone that plays a role in the digestive system. It is specifically involved in regulating gastric activity.

2. **Identifying the Source:**
- The question asks where enterogastrone is secreted from. The options provided are:
- Option 1: Gastric mucosa
- Option 2: Esophageal mucosa
- Option 3: Saliva
- Option 4: Duodenal mucosa

3. **Analyzing Each Option:**
- **Option 1: Gastric mucosa**
- Gastric mucosa is the lining of the stomach and is responsible for secreting gastric juices, but it does not secrete enterogastrone.
- **Option 2: Esophageal mucosa**
- Esophageal mucosa is the lining of the esophagus and primarily functions to protect against stomach acid; it does not secrete enterogastrone.
- **Option 3: Saliva**
- Saliva is produced by salivary glands in the mouth and aids in digestion but is not related to the secretion of enterogastrone.
- **Option 4: Duodenal mucosa**
- The duodenal mucosa is the lining of the duodenum (the first part of the small intestine) and is known to secrete enterogastrone when fatty foods are present.

4. **Conclusion:**
- Based on the analysis of each option, the correct answer is **Option 4: Duodenal mucosa**. Enterogastrone is secreted by the duodenal mucosa.

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