Brunner 's glands are intestinal glands and secrete

Options

A. Mucus
B. Enzymes
C. Enzymes and mucus
D. None of these

Answer

### Step-by-Step Solution:

1. **Identify the Location of Brunner's Glands**:
Brunner's glands are located in the wall of the first few centimeters of the duodenum, which is the first section of the small intestine.

2. **Understand the Structure of Brunner's Glands**:
These glands are described as an extensive array of compound mucous glands.

3. **Determine the Function of the Secretions**:
The primary function of the mucus secreted by Brunner's glands is to protect the duodenal wall from the highly acidic gastric juice that enters the duodenum from the stomach.

4. **Analyze the Composition of the Mucus**:
The mucus secreted by Brunner's glands contains a large excess of bicarbonate ions. This helps in neutralizing the hydrochloric acid that comes from the stomach, thereby protecting the intestinal lining.

5. **Evaluate the Given Options**:
The options provided are:
- Mucous
- Enzymes
- Enzymes and mucous
- None of these

6. **Select the Correct Answer**:
Based on the information gathered, Brunner's glands primarily secrete mucus. Therefore, the correct answer is "mucous."

### Final Answer:
Brunner's glands are intestinal glands and secrete **mucous**.

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