Duodenum produces hormones

Options

A. Renin and gastrin
B. Epinephrine and nor-epinephrine
C. Enterogastrone and cholecystokinin
D. Pituitrin

Answer

### Step-by-Step Solution:

1. **Identify the Location**: The duodenum is the first part of the small intestine, which plays a crucial role in digestion and absorption.

2. **Understand Hormonal Production**: The duodenum is known to produce several hormones that help regulate gastrointestinal activity.

3. **Evaluate the Options**: The question provides several options for hormones and asks which ones are produced by the duodenum.

4. **Review Each Option**:
- **Option 1: Renin** - This hormone is produced by the kidneys, specifically by the juxtaglomerular apparatus. It is involved in blood pressure regulation and is not produced by the duodenum. Therefore, this option is incorrect.
- **Option 2: Epinephrine and Norepinephrine** - These hormones are produced by the adrenal medulla and are involved in the body's fight-or-flight response. They are not produced by the duodenum, making this option incorrect as well.
- **Option 3: Enterogastron and Cholecystokinin** - Enterogastron, also known as gastric inhibitory peptide, inhibits gastric secretion. Cholecystokinin is produced in the duodenum and stimulates the gallbladder to release bile and the pancreas to secrete digestive enzymes. This option is correct as both hormones are produced by the duodenum.

5. **Conclusion**: Based on the evaluation, the correct answer is that the duodenum produces Enterogastron and Cholecystokinin.

### Final Answer:
The hormones produced by the duodenum are Enterogastron and Cholecystokinin.

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