Which of the following is not present in mucosa of intestine?

Options

A. Crypts of lieberkuhn
B. brunner's gland
C. Intestinal gland
D. All are present in mucosa of intestine

Answer

To solve the question "Which of the following is not present in the mucosa of the intestine?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding the Options**:
- Option A: Crypts of Lieberkühn
- Option B: Brunner's gland
- Option C: Intestinal gland
- Option D: All present in mucosa of intestine

2. **Identifying the Structures**:
- **Crypts of Lieberkühn**: These are glandular structures located in the mucosa of the intestine, specifically in the small intestine. They are responsible for secreting intestinal juices.
- **Brunner's Gland**: This is a type of gland that is found in the submucosa of the duodenum, not in the mucosa. It secretes a mucous-rich alkaline fluid that helps to neutralize stomach acid.
- **Intestinal Gland**: Similar to the Crypts of Lieberkühn, these are also found in the mucosa of the intestine and are involved in the secretion of digestive enzymes and fluids.

3. **Analyzing the Options**:
- **Option A** (Crypts of Lieberkühn): Present in the mucosa.
- **Option B** (Brunner's gland): Not present in the mucosa; it is located in the submucosa of the duodenum.
- **Option C** (Intestinal gland): Present in the mucosa.
- **Option D** (All present in mucosa of intestine): Incorrect since Brunner's gland is not included.

4. **Conclusion**:
- The correct answer is **Option B: Brunner's gland**. This gland is not present in the mucosa of the intestine; it is located in the submucosa of the duodenum.