Columnar epithelium with stereocilia can be traced in :

Options

A. Mammary gland
B. Lungs
C. Epididymis
D. Trachea

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where columnar epithelium with stereocilia can be found. It is important to identify the specific location of this type of epithelium in the human body.

2. **Identifying Stereocilia**: Stereocilia are not true cilia; they are long, hair-like projections found on the surface of certain epithelial cells. They are structurally different from cilia, as they are made up of actin filaments rather than microtubules.

3. **Location of Columnar Epithelium with Stereocilia**: The specific location where columnar epithelium with stereocilia is found is in the epididymis, which is part of the male reproductive system.

4. **Distinguishing Stereocilia from Cilia**: It is important to note that while stereocilia are similar in appearance to cilia, they have different structural components. Cilia are composed of microtubules, while stereocilia are made of actin filaments.

5. **Conclusion**: Therefore, the correct answer to the question is that columnar epithelium with stereocilia can be traced in the epididymis.

**Final Answer**: Columnar epithelium with stereocilia can be traced in the epididymis.

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