Outer coat of seminiferous tubules is composed of fibrous connective tissue called

Options

A. Tunica propria
B. Lamina propria
C. Plica semilunaris
D. Tunica albuginea

Answer

To answer the question about the outer coat of seminiferous tubules, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure**: The seminiferous tubules are coiled structures found within the testes where spermatogenesis occurs. They have various layers and coverings.

2. **Identifying the Options**: The question provides four options regarding the outer coat of the seminiferous tubules:
- a) Tunica propria
- b) Lamina propria
- c) Plica semilunaris
- d) Tunica albuginea

3. **Analyzing Each Option**:
- **Tunica propria**: This is the outermost layer of the seminiferous tubules and is made up of fibrous connective tissue.
- **Lamina propria**: This layer is typically associated with mucosal linings and is not relevant to the seminiferous tubules.
- **Plica semilunaris**: This is a structure found in the conjunctiva of the eye, unrelated to the seminiferous tubules.
- **Tunica albuginea**: This is a layer present in the testes but is the innermost layer surrounding the testis, not specifically the outer coat of the seminiferous tubules.

4. **Conclusion**: Based on the analysis, the correct answer is **a) Tunica propria**, as it is the outer coat of the seminiferous tubules composed of fibrous connective tissue.

### Final Answer:
The outer coat of seminiferous tubules is composed of fibrous connective tissue called **Tunica propria**.

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