The pancreas

Options

A. Produces exocrine products involved in chyme digestion
B. Is exclusively an endocrine gland which produces salivary amylase
C. Contains villi to increase surface area
D. Produces urobiligen (a bile pigment)

Answer

### Step-by-Step Solution:

1. **Understanding the Pancreas**: The pancreas is a vital organ in the human body that has both endocrine and exocrine functions. It is located in the loop of the duodenum and is considered the largest endocrine gland.

2. **Exocrine Function**: The pancreas produces exocrine products, which are digestive enzymes that help in the digestion of food. These enzymes include:
- **Lipase**: for the digestion of lipids (fats).
- **Amylase**: for the digestion of starch.
- **Protease**: for the digestion of proteins.
- **Enterokinase**: which activates other digestive enzymes.

3. **Endocrine Function**: The pancreas also has an endocrine function, primarily through the Islets of Langerhans, which contain:
- **Alpha cells**: secrete glucagon.
- **Beta cells**: secrete insulin.
- **Delta cells**: secrete somatostatin.

4. **Chyme and Digestion**: The pancreas secretes these enzymes into the small intestine to aid in the digestion of chyme, which is the partially digested food that comes from the stomach.

5. **Evaluating Options**: The question provides multiple options regarding the characteristics of the pancreas. The correct statement is that the pancreas "produces exocrine products involved in chyme digestion."

6. **Eliminating Incorrect Options**:
- The pancreas is not exclusively an endocrine gland; it has both endocrine and exocrine functions.
- Salivary amylase is produced by salivary glands, not the pancreas.
- The term "contains really to increase surface area" is incorrect; villi are present in the intestine.
- Urobilin, a bile pigment, is produced by the liver, not the pancreas.

7. **Conclusion**: The correct option regarding the pancreas is that it "produces exocrine products involved in chyme digestion."

### Final Answer:
The pancreas produces exocrine products involved in chyme digestion.

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