The functional unit of testes of man is

Options

A. Uriniferous tubules
B. Malpighian tubules
C. Seminiferous tubules
D. Acini or lobules

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the functional unit of the testes in males. This requires knowledge about the anatomy and physiology of the male reproductive system.

2. **Identifying the Testes**: The testes are the primary reproductive organs in males. They are responsible for producing sperm and hormones, particularly testosterone.

3. **Structure of the Testes**: The testes are divided into about 250 compartments known as testicular lobules. Each lobule contains seminiferous tubules.

4. **Seminiferous Tubules**: These are the highly coiled structures within the lobules of the testes. They are crucial for the process of spermatogenesis, which is the production of sperm.

5. **Cell Types in Seminiferous Tubules**: The seminiferous tubules are lined with two main types of cells:
- **Germ Cells**: These are the cells that develop into sperm.
- **Sertoli Cells**: These cells provide support and nourishment to the developing sperm.

6. **Conclusion**: Given the functions and structure of the testes, the functional unit of the testes in males is the **seminiferous tubules**.

7. **Final Answer**: The functional unit of testes of man is **seminiferous tubules**.

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