Which of the following cells of human testis are present in the regions outside the seminiferous tubules but in the testicular lobules ?

Options

A. Leydig cells
B. Sertoli cells
C. Nurse cells
D. All of the above

Answer

To solve the question regarding which cells of the human testis are present in the regions outside the seminiferous tubules but within the testicular lobules, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Testis**:
- The testis is composed of seminiferous tubules where spermatogenesis occurs. These tubules are surrounded by interstitial spaces known as testicular lobules.

2. **Identify the Types of Cells in the Testis**:
- The main types of cells found in the testis include:
- **Spermatogenic cells**: These are the germ cells that develop into sperm.
- **Sertoli cells**: Also known as nurse cells, they support and nourish the developing sperm cells within the seminiferous tubules.
- **Leydig cells**: Also known as interstitial cells, these are located outside the seminiferous tubules and are responsible for producing testosterone and other androgens.

3. **Determine the Location of Each Cell Type**:
- **Spermatogenic cells** and **Sertoli cells** are located within the seminiferous tubules.
- **Leydig cells** are located in the interstitial spaces outside the seminiferous tubules but within the testicular lobules.

4. **Answer the Question**:
- Since the question specifically asks for cells located outside the seminiferous tubules but within the testicular lobules, the correct answer is **Leydig cells**.

5. **Conclusion**:
- The cells present in the regions outside the seminiferous tubules but in the testicular lobules are **Leydig cells**.

### Final Answer:
**Leydig cells (interstitial cells)** are present in the regions outside the seminiferous tubules but in the testicular lobules.

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