Islets of Langerhans in a normal human pancreas comprise only

Options

A. 2-3% of pancreatic tissue
B. 1-2% of pancreatic tissue
C. 2-4% of pancreatic tisssue
D. 4-5 % of pancreatic tissue

Answer

To solve the question regarding the percentage of pancreatic tissue that comprises the Islets of Langerhans in a normal human pancreas, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Pancreas**:
- The pancreas has both exocrine and endocrine functions. The exocrine part is responsible for digestion, while the endocrine part regulates blood sugar levels through hormone secretion.

2. **Identify the Islets of Langerhans**:
- The Islets of Langerhans are clusters of cells within the pancreas that function as the endocrine part. They contain different types of cells, including alpha cells (which secrete glucagon) and beta cells (which secrete insulin).

3. **Determine the Proportion of Islets of Langerhans**:
- The question asks for the percentage of the total pancreatic tissue that is made up of the Islets of Langerhans.

4. **Recall the Known Data**:
- It is known that the Islets of Langerhans comprise a small fraction of the total pancreatic tissue. Specifically, they account for about 1 to 2 percent of the total pancreatic tissue.

5. **Evaluate the Options**:
- The options provided are:
- 2 to 3 percent
- 1 to 2 percent
- 2 to 4 percent
- 4 to 5 percent
- Based on the information recalled, the correct option is 1 to 2 percent.

6. **Conclusion**:
- Thus, the answer to the question is that the Islets of Langerhans in a normal human pancreas comprise **1 to 2 percent of pancreatic tissue**.

### Final Answer:
**1 to 2 percent of pancreatic tissue.**

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