Percentage of chromophobe cells in pituitary is

Options

A. 0.15
B. 0.25
C. 0.35
D. 0.5

Answer

To determine the percentage of chromophobe cells in the pituitary gland, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Pituitary Gland**:
- The pituitary gland is an endocrine gland located in the sella turcica of the sphenoid bone in the skull. It has two main parts: the anterior lobe (adenohypophysis) and the posterior lobe (neurohypophysis).

2. **Identify the Types of Cells in the Pituitary**:
- The pituitary gland contains two main types of cells: chromophiles and chromophobes.
- Chromophiles are further divided into acidophiles and basophiles.

3. **Determine the Percentages of Chromophile Cells**:
- According to the information provided, chromophiles make up 40% of the pituitary cells as acidophiles and 10% as basophiles. Therefore, the total percentage of chromophiles is 40% + 10% = 50%.

4. **Calculate the Percentage of Chromophobe Cells**:
- Since chromophiles constitute 50% of the cells in the pituitary gland, the remaining cells must be chromophobes.
- Thus, the percentage of chromophobe cells is 100% - 50% = 50%.

5. **Conclusion**:
- Therefore, the percentage of chromophobe cells in the pituitary gland is approximately 50%.

### Final Answer:
The percentage of chromophobe cells in the pituitary is **50%**.

---